123938587 has 2 divisors, whose sum is σ = 123938588. Its totient is φ = 123938586.

The previous prime is 123938579. The next prime is 123938609. The reversal of 123938587 is 785839321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123938587 - 2³ = 123938579 is a prime.

It is not a weakly prime, because it can be changed into another prime (123938537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61969293 + 61969294.

It is an arithmetic number, because the mean of its divisors is an integer number (61969294).

Almost surely, 2^123938587 is an apocalyptic number.

123938587 is a deficient number, since it is larger than the sum of its proper divisors (1).

123938587 is an equidigital number, since it uses as much as digits as its factorization.

123938587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 46.

The square root of 123938587 is about 11132.7708590449. The cubic root of 123938587 is about 498.5807579825.

The spelling of 123938587 in words is "one hundred twenty-three million, nine hundred thirty-eight thousand, five hundred eighty-seven".