242053139 has 4 divisors (see below), whose sum is σ = 244273920. Its totient is φ = 239832360.

The previous prime is 242053117. The next prime is 242053183. The reversal of 242053139 is 931350242.

242053139 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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242053139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242053039) 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, 1110227 + ... + 1110444.

It is an arithmetic number, because the mean of its divisors is an integer number (61068480).

Almost surely, 2^242053139 is an apocalyptic number.

242053139 is a deficient number, since it is larger than the sum of its proper divisors (2220781).

242053139 is a wasteful number, since it uses less digits than its factorization.

242053139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2220780.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 242053139 is about 15558.0570445027. The cubic root of 242053139 is about 623.2135773890.

The spelling of 242053139 in words is "two hundred forty-two million, fifty-three thousand, one hundred thirty-nine".