125042587 has 2 divisors, whose sum is σ = 125042588. Its totient is φ = 125042586.

The previous prime is 125042551. The next prime is 125042639. The reversal of 125042587 is 785240521.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125042587 is a prime.

It is not a weakly prime, because it can be changed into another prime (125042527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62521293 + 62521294.

It is an arithmetic number, because the mean of its divisors is an integer number (62521294).

Almost surely, 2^125042587 is an apocalyptic number.

125042587 is a deficient number, since it is larger than the sum of its proper divisors (1).

125042587 is an equidigital number, since it uses as much as digits as its factorization.

125042587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 125042587 is about 11182.2442738477. The cubic root of 125042587 is about 500.0567762193.

The spelling of 125042587 in words is "one hundred twenty-five million, forty-two thousand, five hundred eighty-seven".