210156255242 has 32 divisors (see below), whose sum is σ = 327719478528. Its totient is φ = 101005825536.

The previous prime is 210156255191. The next prime is 210156255263. The reversal of 210156255242 is 242552651012.

210156255242 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2072918 + ... + 2171934.

It is an arithmetic number, because the mean of its divisors is an integer number (10241233704).

Almost surely, 2^210156255242 is an apocalyptic number.

210156255242 is a deficient number, since it is larger than the sum of its proper divisors (117563223286).

210156255242 is a wasteful number, since it uses less digits than its factorization.

210156255242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99470.

The product of its (nonzero) digits is 48000, while the sum is 35.

The spelling of 210156255242 in words is "two hundred ten billion, one hundred fifty-six million, two hundred fifty-five thousand, two hundred forty-two".