123725887 has 4 divisors (see below), whose sum is σ = 123752320. Its totient is φ = 123699456.

The previous prime is 123725879. The next prime is 123725897. The reversal of 123725887 is 788527321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123725887 - 2³ = 123725879 is a prime.

It is a super-2 number, since 2×123725887² = 30616190227873538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123725827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4098 + ... + 16255.

It is an arithmetic number, because the mean of its divisors is an integer number (30938080).

Almost surely, 2^123725887 is an apocalyptic number.

123725887 is a deficient number, since it is larger than the sum of its proper divisors (26433).

123725887 is an equidigital number, since it uses as much as digits as its factorization.

123725887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26432.

The product of its digits is 188160, while the sum is 43.

The square root of 123725887 is about 11123.2138790909. The cubic root of 123725887 is about 498.2953777972.

The spelling of 123725887 in words is "one hundred twenty-three million, seven hundred twenty-five thousand, eight hundred eighty-seven".