139161002 has 4 divisors (see below), whose sum is σ = 208741506. Its totient is φ = 69580500.

The previous prime is 139160981. The next prime is 139161019. The reversal of 139161002 is 200161931.

It is a happy number.

139161002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 200161931 = 5623 ⋅35597.

It can be written as a sum of positive squares in only one way, i.e., 122522761 + 16638241 = 11069^2 + 4079^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34790249 + ... + 34790252.

Almost surely, 2^139161002 is an apocalyptic number.

139161002 is a deficient number, since it is larger than the sum of its proper divisors (69580504).

139161002 is an equidigital number, since it uses as much as digits as its factorization.

139161002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69580503.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 139161002 is about 11796.6521521998. The cubic root of 139161002 is about 518.2100711737.

The spelling of 139161002 in words is "one hundred thirty-nine million, one hundred sixty-one thousand, two".