242557900 has 36 divisors (see below), whose sum is σ = 566842192. Its totient is φ = 89559360.

The previous prime is 242557879. The next prime is 242557901. The reversal of 242557900 is 9755242.

It is not an unprimeable number, because it can be changed into a prime (242557901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91992 + ... + 94591.

Almost surely, 2^242557900 is an apocalyptic number.

242557900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242557900 is an abundant number, since it is smaller than the sum of its proper divisors (324284292).

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

242557900 is a wasteful number, since it uses less digits than its factorization.

242557900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186610 (or 186603 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 242557900 is about 15574.2704484030. The cubic root of 242557900 is about 623.6464788849.

The spelling of 242557900 in words is "two hundred forty-two million, five hundred fifty-seven thousand, nine hundred".