259042187 has 2 divisors, whose sum is σ = 259042188. Its totient is φ = 259042186.

The previous prime is 259042171. The next prime is 259042213. The reversal of 259042187 is 781240952.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 259042187 - 2⁴ = 259042171 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 259042187.

It is not a weakly prime, because it can be changed into another prime (259042687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129521093 + 129521094.

It is an arithmetic number, because the mean of its divisors is an integer number (129521094).

Almost surely, 2^259042187 is an apocalyptic number.

259042187 is a deficient number, since it is larger than the sum of its proper divisors (1).

259042187 is an equidigital number, since it uses as much as digits as its factorization.

259042187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 259042187 is about 16094.7875723788. The cubic root of 259042187 is about 637.4657160597.

The spelling of 259042187 in words is "two hundred fifty-nine million, forty-two thousand, one hundred eighty-seven".