242620012156 has 18 divisors (see below), whose sum is σ = 448107739800. Its totient is φ = 114925268232.

The previous prime is 242620012127. The next prime is 242620012169. The reversal of 242620012156 is 651210026242.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 84008256 + ... + 84011143.

Almost surely, 2^242620012156 is an apocalyptic number.

It is an amenable number.

242620012156 is a deficient number, since it is larger than the sum of its proper divisors (205487727644).

242620012156 is a wasteful number, since it uses less digits than its factorization.

242620012156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168019441 (or 168019420 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 242620012156 its reverse (651210026242), we get a palindrome (893830038398).

The spelling of 242620012156 in words is "two hundred forty-two billion, six hundred twenty million, twelve thousand, one hundred fifty-six".