139431134 has 4 divisors (see below), whose sum is σ = 209146704. Its totient is φ = 69715566.

The previous prime is 139431107. The next prime is 139431151. The reversal of 139431134 is 431134931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 431134931 = 23 ⋅18744997.

It is a super-2 number, since 2×139431134² = 38882082257051912, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 139431097 and 139431106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34857782 + ... + 34857785.

It is an arithmetic number, because the mean of its divisors is an integer number (52286676).

Almost surely, 2^139431134 is an apocalyptic number.

139431134 is a deficient number, since it is larger than the sum of its proper divisors (69715570).

139431134 is an equidigital number, since it uses as much as digits as its factorization.

139431134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69715569.

The product of its digits is 3888, while the sum is 29.

The square root of 139431134 is about 11808.0961208825. The cubic root of 139431134 is about 518.5451618032.

The spelling of 139431134 in words is "one hundred thirty-nine million, four hundred thirty-one thousand, one hundred thirty-four".