156642 has 8 divisors (see below), whose sum is σ = 313296. Its totient is φ = 52212.

The previous prime is 156641. The next prime is 156659. The reversal of 156642 is 246651.

156642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

156642 is an admirable number.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (156641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13048 + ... + 13059.

It is an arithmetic number, because the mean of its divisors is an integer number (39162).

2¹⁵⁶⁶⁴² is an apocalyptic number.

156642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

156642 is a wasteful number, since it uses less digits than its factorization.

156642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26112.

The product of its digits is 1440, while the sum is 24.

The square root of 156642 is about 395.7802420536. The cubic root of 156642 is about 53.9058716840.

Subtracting 156642 from its reverse (246651), we obtain a palindrome (90009).

The spelling of 156642 in words is "one hundred fifty-six thousand, six hundred forty-two".