139746132 has 18 divisors (see below), whose sum is σ = 353247258. Its totient is φ = 46582032.

The previous prime is 139746127. The next prime is 139746143. The reversal of 139746132 is 231647931.

139746132 is a `hidden beast` number, since 1 + 39 + 7 + 4 + 613 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 130782096 + 8964036 = 11436^2 + 2994^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×139746132² = 39057962817922848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 3881837 = 139746132 / (1 + 3 + 9 + 7 + 4 + 6 + 1 + 3 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1940883 + ... + 1940954.

Almost surely, 2^139746132 is an apocalyptic number.

139746132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

139746132 is an abundant number, since it is smaller than the sum of its proper divisors (213501126).

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

139746132 is a wasteful number, since it uses less digits than its factorization.

139746132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3881847 (or 3881842 counting only the distinct ones).

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

The square root of 139746132 is about 11821.4268174362. The cubic root of 139746132 is about 518.9353612127.

The spelling of 139746132 in words is "one hundred thirty-nine million, seven hundred forty-six thousand, one hundred thirty-two".