140740 has 24 divisors (see below), whose sum is σ = 306432. Its totient is φ = 54240.

The previous prime is 140731. The next prime is 140741. The reversal of 140740 is 47041.

It is a happy number.

140740 is a modest number, since divided by 740 gives 140 as remainder.

It is not an unprimeable number, because it can be changed into a prime (140741) by changing a digit.

140740 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 507 + ... + 733.

It is an arithmetic number, because the mean of its divisors is an integer number (12768).

2¹⁴⁰⁷⁴⁰ is an apocalyptic number.

140740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153216).

140740 is an abundant number, since it is smaller than the sum of its proper divisors (165692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140740 is a wasteful number, since it uses less digits than its factorization.

140740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267 (or 265 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 140740 is about 375.1533019980. The cubic root of 140740 is about 52.0162671000.

Adding to 140740 its reverse (47041), we get a palindrome (187781).

It can be divided in two parts, 1407 and 40, that multiplied together give a triangular number (56280 = T₃₃₅).

The spelling of 140740 in words is "one hundred forty thousand, seven hundred forty", and thus it is an iban number.