139125437 has 8 divisors (see below), whose sum is σ = 153028992. Its totient is φ = 126476460.

The previous prime is 139125421. The next prime is 139125491. The reversal of 139125437 is 734521931.

139125437 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 139125437 - 2⁴ = 139125421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139125397 and 139125406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139125407) 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, 50933 + ... + 53594.

It is an arithmetic number, because the mean of its divisors is an integer number (19128624).

Almost surely, 2^139125437 is an apocalyptic number.

It is an amenable number.

139125437 is a deficient number, since it is larger than the sum of its proper divisors (13903555).

139125437 is an equidigital number, since it uses as much as digits as its factorization.

139125437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104560 (or 104538 counting only the distinct ones).

The product of its digits is 22680, while the sum is 35.

The square root of 139125437 is about 11795.1446366715. The cubic root of 139125437 is about 518.1659215648.

The spelling of 139125437 in words is "one hundred thirty-nine million, one hundred twenty-five thousand, four hundred thirty-seven".