242561018 has 16 divisors (see below), whose sum is σ = 416217984. Its totient is φ = 103854960.

The previous prime is 242561009. The next prime is 242561021. The reversal of 242561018 is 810165242.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7883 + ... + 23393.

It is an arithmetic number, because the mean of its divisors is an integer number (26013624).

Almost surely, 2^242561018 is an apocalyptic number.

242561018 is a deficient number, since it is larger than the sum of its proper divisors (173656966).

242561018 is a wasteful number, since it uses less digits than its factorization.

242561018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16637.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 242561018 is about 15574.3705490784. The cubic root of 242561018 is about 623.6491511285.

The spelling of 242561018 in words is "two hundred forty-two million, five hundred sixty-one thousand, eighteen".