156432242 has 8 divisors (see below), whose sum is σ = 234702576. Its totient is φ = 78198052.

The previous prime is 156432229. The next prime is 156432253. The reversal of 156432242 is 242234651.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8933 + ... + 19815.

It is an arithmetic number, because the mean of its divisors is an integer number (29337822).

Almost surely, 2^156432242 is an apocalyptic number.

156432242 is a deficient number, since it is larger than the sum of its proper divisors (78270334).

156432242 is a wasteful number, since it uses less digits than its factorization.

156432242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18072.

The product of its digits is 11520, while the sum is 29.

The square root of 156432242 is about 12507.2875556613. The cubic root of 156432242 is about 538.8179930084.

Adding to 156432242 its reverse (242234651), we get a palindrome (398666893).

The spelling of 156432242 in words is "one hundred fifty-six million, four hundred thirty-two thousand, two hundred forty-two".