142340 has 24 divisors (see below), whose sum is σ = 326592. Its totient is φ = 51680.

The previous prime is 142327. The next prime is 142357. The reversal of 142340 is 43241.

It is an unprimeable number.

142340 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 (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104 + ... + 543.

It is an arithmetic number, because the mean of its divisors is an integer number (13608).

2¹⁴²³⁴⁰ is an apocalyptic number.

142340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142340 is an abundant number, since it is smaller than the sum of its proper divisors (184252).

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

142340 is a wasteful number, since it uses less digits than its factorization.

142340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667 (or 665 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 142340 is about 377.2797370652. The cubic root of 142340 is about 52.2126401278.

Adding to 142340 its reverse (43241), we get a palindrome (185581).

Subtracting from 142340 its reverse (43241), we obtain a palindrome (99099).

The spelling of 142340 in words is "one hundred forty-two thousand, three hundred forty", and thus it is an iban number.