242765684531 has 2 divisors, whose sum is σ = 242765684532. Its totient is φ = 242765684530.

The previous prime is 242765684509. The next prime is 242765684543. The reversal of 242765684531 is 135486567242.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242765684531 - 2²² = 242761490227 is a prime.

It is a super-2 number, since 2×242765684531² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (242765684731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121382842265 + 121382842266.

It is an arithmetic number, because the mean of its divisors is an integer number (121382842266).

Almost surely, 2^242765684531 is an apocalyptic number.

242765684531 is a deficient number, since it is larger than the sum of its proper divisors (1).

242765684531 is an equidigital number, since it uses as much as digits as its factorization.

242765684531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9676800, while the sum is 53.

The spelling of 242765684531 in words is "two hundred forty-two billion, seven hundred sixty-five million, six hundred eighty-four thousand, five hundred thirty-one".