242055531 has 6 divisors (see below), whose sum is σ = 349635780. Its totient is φ = 161370348.

The previous prime is 242055521. The next prime is 242055553. The reversal of 242055531 is 135550242.

It is a happy number.

It is not a de Polignac number, because 242055531 - 2⁷ = 242055403 is a prime.

It is a super-2 number, since 2×242055531² = 117181760175383922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 242055495 and 242055504.

It is not an unprimeable number, because it can be changed into a prime (242055511) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13447521 + ... + 13447538.

It is an arithmetic number, because the mean of its divisors is an integer number (58272630).

Almost surely, 2^242055531 is an apocalyptic number.

242055531 is a deficient number, since it is larger than the sum of its proper divisors (107580249).

242055531 is a wasteful number, since it uses less digits than its factorization.

242055531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26895065 (or 26895062 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 242055531 is about 15558.1339176651. The cubic root of 242055531 is about 623.2156302743.

The spelling of 242055531 in words is "two hundred forty-two million, fifty-five thousand, five hundred thirty-one".