139078332 has 108 divisors (see below), whose sum is σ = 376416040. Its totient is φ = 43281216.

The previous prime is 139078259. The next prime is 139078339. The reversal of 139078332 is 233870931.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139078339) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1275894 + ... + 1276002.

Almost surely, 2^139078332 is an apocalyptic number.

139078332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139078332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188208020).

139078332 is an abundant number, since it is smaller than the sum of its proper divisors (237337708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139078332 is a wasteful number, since it uses less digits than its factorization.

139078332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 139078332 is about 11793.1476714234. The cubic root of 139078332 is about 518.1074348699.

The spelling of 139078332 in words is "one hundred thirty-nine million, seventy-eight thousand, three hundred thirty-two".