1407140 has 72 divisors (see below), whose sum is σ = 3716160. Its totient is φ = 437184.

The previous prime is 1407113. The next prime is 1407143. The reversal of 1407140 is 417041.

1407140 = T₃₆ + T₃₇ + ... + T₂₀₃.

It is not an unprimeable number, because it can be changed into a prime (1407143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61169 + ... + 61191.

2^1407140 is an apocalyptic number.

1407140 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 1407140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1858080).

1407140 is an abundant number, since it is smaller than the sum of its proper divisors (2309020).

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

1407140 is a wasteful number, since it uses less digits than its factorization.

1407140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81 (or 56 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 1407140 is about 1186.2293201569. The cubic root of 1407140 is about 112.0587489401.

Subtracting from 1407140 its reverse (417041), we obtain a palindrome (990099).

The spelling of 1407140 in words is "one million, four hundred seven thousand, one hundred forty".