242531660 has 24 divisors (see below), whose sum is σ = 582076320. Its totient is φ = 83153664.

The previous prime is 242531651. The next prime is 242531699. The reversal of 242531660 is 66135242.

It is a super-2 number, since 2×242531660² = 117643212204711200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 866045 + ... + 866324.

It is an arithmetic number, because the mean of its divisors is an integer number (24253180).

Almost surely, 2^242531660 is an apocalyptic number.

242531660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242531660 is an abundant number, since it is smaller than the sum of its proper divisors (339544660).

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

242531660 is a wasteful number, since it uses less digits than its factorization.

242531660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732385 (or 1732383 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 242531660 is about 15573.4280105570. The cubic root of 242531660 is about 623.6239893079.

The spelling of 242531660 in words is "two hundred forty-two million, five hundred thirty-one thousand, six hundred sixty".