139125853 has 4 divisors (see below), whose sum is σ = 139155520. Its totient is φ = 139096188.

The previous prime is 139125823. The next prime is 139125859. The reversal of 139125853 is 358521931.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 358521931 = 277 ⋅1294303.

It is a cyclic number.

It is not a de Polignac number, because 139125853 - 2²¹ = 137028701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139125859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6075 + ... + 17752.

It is an arithmetic number, because the mean of its divisors is an integer number (34788880).

Almost surely, 2^139125853 is an apocalyptic number.

It is an amenable number.

139125853 is a deficient number, since it is larger than the sum of its proper divisors (29667).

139125853 is an equidigital number, since it uses as much as digits as its factorization.

139125853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29666.

The product of its digits is 32400, while the sum is 37.

The square root of 139125853 is about 11795.1622710330. The cubic root of 139125853 is about 518.1664380215.

The spelling of 139125853 in words is "one hundred thirty-nine million, one hundred twenty-five thousand, eight hundred fifty-three".