156216242 has 32 divisors (see below), whose sum is σ = 293147904. Its totient is φ = 60782400.

The previous prime is 156216241. The next prime is 156216251. The reversal of 156216242 is 242612651.

It is not an unprimeable number, because it can be changed into a prime (156216241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4067 + ... + 18137.

It is an arithmetic number, because the mean of its divisors is an integer number (9160872).

Almost surely, 2^156216242 is an apocalyptic number.

156216242 is a deficient number, since it is larger than the sum of its proper divisors (136931662).

156216242 is a wasteful number, since it uses less digits than its factorization.

156216242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14154.

The product of its digits is 5760, while the sum is 29.

The square root of 156216242 is about 12498.6496070576. The cubic root of 156216242 is about 538.5698806975.

Adding to 156216242 its reverse (242612651), we get a palindrome (398828893).

The spelling of 156216242 in words is "one hundred fifty-six million, two hundred sixteen thousand, two hundred forty-two".