156322122 has 128 divisors (see below), whose sum is σ = 380712960. Its totient is φ = 42282240.

The previous prime is 156322109. The next prime is 156322147. The reversal of 156322122 is 221223651.

It is a junction number, because it is equal to n+sod(n) for n = 156322092 and 156322101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2333133 + ... + 2333199.

It is an arithmetic number, because the mean of its divisors is an integer number (2974320).

Almost surely, 2^156322122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 156322122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190356480).

156322122 is an abundant number, since it is smaller than the sum of its proper divisors (224390838).

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

156322122 is a wasteful number, since it uses less digits than its factorization.

156322122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188.

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

The square root of 156322122 is about 12502.8845471755. The cubic root of 156322122 is about 538.6915302347.

Adding to 156322122 its reverse (221223651), we get a palindrome (377545773).

The spelling of 156322122 in words is "one hundred fifty-six million, three hundred twenty-two thousand, one hundred twenty-two".