252442540187 has 2 divisors, whose sum is σ = 252442540188. Its totient is φ = 252442540186.

The previous prime is 252442540171. The next prime is 252442540279. The reversal of 252442540187 is 781045244252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 252442540187 - 2⁴ = 252442540171 is a prime.

It is not a weakly prime, because it can be changed into another prime (252442540387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126221270093 + 126221270094.

It is an arithmetic number, because the mean of its divisors is an integer number (126221270094).

Almost surely, 2^252442540187 is an apocalyptic number.

252442540187 is a deficient number, since it is larger than the sum of its proper divisors (1).

252442540187 is an equidigital number, since it uses as much as digits as its factorization.

252442540187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 716800, while the sum is 44.

The spelling of 252442540187 in words is "two hundred fifty-two billion, four hundred forty-two million, five hundred forty thousand, one hundred eighty-seven".