242186978264 has 64 divisors (see below), whose sum is σ = 566914429440. Its totient is φ = 94231388160.

The previous prime is 242186978227. The next prime is 242186978323. The reversal of 242186978264 is 462879681242.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193112 + ... + 722264.

It is an arithmetic number, because the mean of its divisors is an integer number (8858037960).

Almost surely, 2^242186978264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 242186978264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283457214720).

242186978264 is an abundant number, since it is smaller than the sum of its proper divisors (324727451176).

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

242186978264 is a wasteful number, since it uses less digits than its factorization.

242186978264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529920 (or 529916 counting only the distinct ones).

The product of its digits is 18579456, while the sum is 59.

The spelling of 242186978264 in words is "two hundred forty-two billion, one hundred eighty-six million, nine hundred seventy-eight thousand, two hundred sixty-four".