139442212 has 24 divisors (see below), whose sum is σ = 300337856. Its totient is φ = 55163808.

The previous prime is 139442207. The next prime is 139442213. The reversal of 139442212 is 212244931.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (139442213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191178 + ... + 191905.

Almost surely, 2^139442212 is an apocalyptic number.

It is an amenable number.

139442212 is an abundant number, since it is smaller than the sum of its proper divisors (160895644).

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

139442212 is a wasteful number, since it uses less digits than its factorization.

139442212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383107 (or 383105 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

The square root of 139442212 is about 11808.5651965004. The cubic root of 139442212 is about 518.5588944873.

The spelling of 139442212 in words is "one hundred thirty-nine million, four hundred forty-two thousand, two hundred twelve".