242500057 has 4 divisors (see below), whose sum is σ = 243187380. Its totient is φ = 241812736.

The previous prime is 242500051. The next prime is 242500067. The reversal of 242500057 is 750005242.

242500057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 127667401 + 114832656 = 11299^2 + 10716^2 .

It is a cyclic number.

It is not a de Polignac number, because 242500057 - 2²⁷ = 108282329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242500051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 343132 + ... + 343837.

It is an arithmetic number, because the mean of its divisors is an integer number (60796845).

Almost surely, 2^242500057 is an apocalyptic number.

It is an amenable number.

242500057 is a deficient number, since it is larger than the sum of its proper divisors (687323).

242500057 is an equidigital number, since it uses as much as digits as its factorization.

242500057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687322.

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 242500057 is about 15572.4133325570. The cubic root of 242500057 is about 623.5969010987.

Adding to 242500057 its reverse (750005242), we get a palindrome (992505299).

The spelling of 242500057 in words is "two hundred forty-two million, five hundred thousand, fifty-seven".