242239856883578 has 16 divisors (see below), whose sum is σ = 372261020583816. Its totient is φ = 118178101753920.

The previous prime is 242239856883533. The next prime is 242239856883613. The reversal of 242239856883578 is 875388658932242.

It can be written as a sum of positive squares in 4 ways, for example, as 97983014457769 + 144256842425809 = 9898637^2 + 12010697^2 .

It is a Curzon number.

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, 6312913601 + ... + 6312951972.

Almost surely, 2^{242239856883578} is an apocalyptic number.

242239856883578 is a deficient number, since it is larger than the sum of its proper divisors (130021163700238).

242239856883578 is a wasteful number, since it uses less digits than its factorization.

242239856883578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12625865809.

The product of its digits is 11147673600, while the sum is 80.

The spelling of 242239856883578 in words is "two hundred forty-two trillion, two hundred thirty-nine billion, eight hundred fifty-six million, eight hundred eighty-three thousand, five hundred seventy-eight".