242551264 has 24 divisors (see below), whose sum is σ = 502656840. Its totient is φ = 114892416.

The previous prime is 242551241. The next prime is 242551271. The reversal of 242551264 is 462155242.

It is a super-2 number, since 2×242551264² = 117662231335995392, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198859 + ... + 200074.

It is an arithmetic number, because the mean of its divisors is an integer number (20944035).

Almost surely, 2^242551264 is an apocalyptic number.

It is an amenable number.

242551264 is an abundant number, since it is smaller than the sum of its proper divisors (260105576).

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

242551264 is a wasteful number, since it uses less digits than its factorization.

242551264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398962 (or 398954 counting only the distinct ones).

The product of its digits is 19200, while the sum is 31.

The square root of 242551264 is about 15574.0574032588. The cubic root of 242551264 is about 623.6407915064.

The spelling of 242551264 in words is "two hundred forty-two million, five hundred fifty-one thousand, two hundred sixty-four".