125127139 has 8 divisors (see below), whose sum is σ = 126415872. Its totient is φ = 123843720.

The previous prime is 125127137. The next prime is 125127143. The reversal of 125127139 is 931721521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125127139 - 2¹ = 125127137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125127139.

It is not an unprimeable number, because it can be changed into a prime (125127133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59622 + ... + 61684.

It is an arithmetic number, because the mean of its divisors is an integer number (15801984).

Almost surely, 2^125127139 is an apocalyptic number.

125127139 is a deficient number, since it is larger than the sum of its proper divisors (1288733).

125127139 is a wasteful number, since it uses less digits than its factorization.

125127139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2657.

The product of its digits is 3780, while the sum is 31.

The square root of 125127139 is about 11186.0242713844. The cubic root of 125127139 is about 500.1694612260.

The spelling of 125127139 in words is "one hundred twenty-five million, one hundred twenty-seven thousand, one hundred thirty-nine".