156342 has 16 divisors (see below), whose sum is σ = 317952. Its totient is φ = 51240.

The previous prime is 156329. The next prime is 156347. The reversal of 156342 is 243651.

It is a happy number.

156342 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 156342.

It is not an unprimeable number, because it can be changed into a prime (156347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243 + ... + 609.

It is an arithmetic number, because the mean of its divisors is an integer number (19872).

2¹⁵⁶³⁴² is an apocalyptic number.

156342 is an abundant number, since it is smaller than the sum of its proper divisors (161610).

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

156342 is a wasteful number, since it uses less digits than its factorization.

156342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443.

The product of its digits is 720, while the sum is 21.

The square root of 156342 is about 395.4010622141. The cubic root of 156342 is about 53.8714362696.

Adding to 156342 its reverse (243651), we get a palindrome (399993).

The spelling of 156342 in words is "one hundred fifty-six thousand, three hundred forty-two".