125140139 has 4 divisors (see below), whose sum is σ = 125303640. Its totient is φ = 124976640.

The previous prime is 125140129. The next prime is 125140163. The reversal of 125140139 is 931041521.

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 125140139 - 2⁴ = 125140123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125140109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80597 + ... + 82134.

It is an arithmetic number, because the mean of its divisors is an integer number (31325910).

Almost surely, 2^125140139 is an apocalyptic number.

125140139 is a deficient number, since it is larger than the sum of its proper divisors (163501).

125140139 is an equidigital number, since it uses as much as digits as its factorization.

125140139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163500.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 125140139 is about 11186.6053385288. The cubic root of 125140139 is about 500.1867822161.

The spelling of 125140139 in words is "one hundred twenty-five million, one hundred forty thousand, one hundred thirty-nine".