242540955 has 24 divisors (see below), whose sum is σ = 445135392. Its totient is φ = 121745664.

The previous prime is 242540951. The next prime is 242540971. The reversal of 242540955 is 559045242.

242540955 is a `hidden beast` number, since 24 + 2 + 540 + 95 + 5 = 666.

It is not a de Polignac number, because 242540955 - 2² = 242540951 is a prime.

It is a super-2 number, since 2×242540955² = 117652229704624050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (242540951) 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, 157759 + ... + 159288.

It is an arithmetic number, because the mean of its divisors is an integer number (18547308).

Almost surely, 2^242540955 is an apocalyptic number.

242540955 is a deficient number, since it is larger than the sum of its proper divisors (202594437).

242540955 is a wasteful number, since it uses less digits than its factorization.

242540955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317075 (or 317072 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 242540955 is about 15573.7264326814. The cubic root of 242540955 is about 623.6319559804.

The spelling of 242540955 in words is "two hundred forty-two million, five hundred forty thousand, nine hundred fifty-five".