242865899757 has 24 divisors (see below), whose sum is σ = 379261452024. Its totient is φ = 148874379264.

The previous prime is 242865899711. The next prime is 242865899767. The reversal of 242865899757 is 757998568242.

242865899757 is a `hidden beast` number, since 2 + 428 + 65 + 8 + 9 + 97 + 57 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 50514360516 + 192351539241 = 224754^2 + 438579^2 .

It is not a de Polignac number, because 242865899757 - 2³¹ = 240718416109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242865899707) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4008408 + ... + 4068545.

It is an arithmetic number, because the mean of its divisors is an integer number (15802560501).

Almost surely, 2^242865899757 is an apocalyptic number.

It is an amenable number.

242865899757 is a deficient number, since it is larger than the sum of its proper divisors (136395552267).

242865899757 is a wasteful number, since it uses less digits than its factorization.

242865899757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8077229 (or 8077226 counting only the distinct ones).

The product of its digits is 609638400, while the sum is 72.

The spelling of 242865899757 in words is "two hundred forty-two billion, eight hundred sixty-five million, eight hundred ninety-nine thousand, seven hundred fifty-seven".