139078532 has 6 divisors (see below), whose sum is σ = 243387438. Its totient is φ = 69539264.

The previous prime is 139078529. The next prime is 139078543. The reversal of 139078532 is 235870931.

It can be written as a sum of positive squares in only one way, i.e., 121572676 + 17505856 = 11026^2 + 4184^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17384813 + ... + 17384820.

It is an arithmetic number, because the mean of its divisors is an integer number (40564573).

Almost surely, 2^139078532 is an apocalyptic number.

It is an amenable number.

139078532 is a deficient number, since it is larger than the sum of its proper divisors (104308906).

139078532 is a wasteful number, since it uses less digits than its factorization.

139078532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34769637 (or 34769635 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 139078532 is about 11793.1561509208. The cubic root of 139078532 is about 518.1076832226.

The spelling of 139078532 in words is "one hundred thirty-nine million, seventy-eight thousand, five hundred thirty-two".