242585237 has 2 divisors, whose sum is σ = 242585238. Its totient is φ = 242585236.

The previous prime is 242585191. The next prime is 242585249. The reversal of 242585237 is 732585242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 177395761 + 65189476 = 13319^2 + 8074^2 .

It is a cyclic number.

It is not a de Polignac number, because 242585237 - 2²⁰ = 241536661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 242585237.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242585267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121292618 + 121292619.

It is an arithmetic number, because the mean of its divisors is an integer number (121292619).

Almost surely, 2^242585237 is an apocalyptic number.

It is an amenable number.

242585237 is a deficient number, since it is larger than the sum of its proper divisors (1).

242585237 is an equidigital number, since it uses as much as digits as its factorization.

242585237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 134400, while the sum is 38.

The square root of 242585237 is about 15575.1480570812. The cubic root of 242585237 is about 623.6699069453.

The spelling of 242585237 in words is "two hundred forty-two million, five hundred eighty-five thousand, two hundred thirty-seven".