139157 has 4 divisors (see below), whose sum is σ = 142956. Its totient is φ = 135360.

The previous prime is 139133. The next prime is 139169. The reversal of 139157 is 751931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 751931 = 283 ⋅2657.

It can be written as a sum of positive squares in 2 ways, for example, as 96721 + 42436 = 311^2 + 206^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 139157.

It is not an unprimeable number, because it can be changed into a prime (139177) 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, 1844 + ... + 1917.

It is an arithmetic number, because the mean of its divisors is an integer number (35739).

2¹³⁹¹⁵⁷ is an apocalyptic number.

It is an amenable number.

139157 is a deficient number, since it is larger than the sum of its proper divisors (3799).

139157 is an equidigital number, since it uses as much as digits as its factorization.

139157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3798.

The product of its digits is 945, while the sum is 26.

The square root of 139157 is about 373.0375316238. The cubic root of 139157 is about 51.8205103555.

The spelling of 139157 in words is "one hundred thirty-nine thousand, one hundred fifty-seven".