139422432 has 24 divisors (see below), whose sum is σ = 365984136. Its totient is φ = 46474112.

The previous prime is 139422403. The next prime is 139422433. The reversal of 139422432 is 234224931.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×139422432² = 38877229089589248, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 139422432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139422433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 726063 + ... + 726254.

It is an arithmetic number, because the mean of its divisors is an integer number (15249339).

Almost surely, 2^139422432 is an apocalyptic number.

139422432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

139422432 is an abundant number, since it is smaller than the sum of its proper divisors (226561704).

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

139422432 is a wasteful number, since it uses less digits than its factorization.

139422432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1452330 (or 1452322 counting only the distinct ones).

The product of its digits is 10368, while the sum is 30.

The square root of 139422432 is about 11807.7276391353. The cubic root of 139422432 is about 518.5343739833.

The spelling of 139422432 in words is "one hundred thirty-nine million, four hundred twenty-two thousand, four hundred thirty-two".