156322242 has 48 divisors (see below), whose sum is σ = 359873280. Its totient is φ = 48871296.

The previous prime is 156322223. The next prime is 156322249. The reversal of 156322242 is 242223651.

It is a happy number.

156322242 is a `hidden beast` number, since 1 + 5 + 632 + 2 + 24 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (156322249) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 109143 + ... + 110565.

It is an arithmetic number, because the mean of its divisors is an integer number (7497360).

Almost surely, 2^156322242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 156322242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179936640).

156322242 is an abundant number, since it is smaller than the sum of its proper divisors (203551038).

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

156322242 is a wasteful number, since it uses less digits than its factorization.

156322242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1807 (or 1804 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 156322242 is about 12502.8893460672. The cubic root of 156322242 is about 538.6916680761.

Adding to 156322242 its reverse (242223651), we get a palindrome (398545893).

The spelling of 156322242 in words is "one hundred fifty-six million, three hundred twenty-two thousand, two hundred forty-two".