156722442 has 8 divisors (see below), whose sum is σ = 313444896. Its totient is φ = 52240812.

The previous prime is 156722441. The next prime is 156722443. The reversal of 156722442 is 244227651.

It is an interprime number because it is at equal distance from previous prime (156722441) and next prime (156722443).

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

156722442 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (156722441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13060198 + ... + 13060209.

It is an arithmetic number, because the mean of its divisors is an integer number (39180612).

Almost surely, 2^156722442 is an apocalyptic number.

156722442 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.

156722442 is a wasteful number, since it uses less digits than its factorization.

156722442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26120412.

The product of its digits is 26880, while the sum is 33.

The square root of 156722442 is about 12518.8834166630. The cubic root of 156722442 is about 539.1509771967.

The spelling of 156722442 in words is "one hundred fifty-six million, seven hundred twenty-two thousand, four hundred forty-two".