139706230212 has 18 divisors (see below), whose sum is σ = 353146304238. Its totient is φ = 46568743392.

The previous prime is 139706230211. The next prime is 139706230217. The reversal of 139706230212 is 212032607931.

139706230212 is a `hidden beast` number, since 1 + 3 + 9 + 7 + 0 + 623 + 0 + 21 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 114579542016 + 25126688196 = 338496^2 + 158514^2 .

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

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: 3880728617 = 139706230212 / (1 + 3 + 9 + 7 + 0 + 6 + 2 + 3 + 0 + 2 + 1 + 2).

It is not an unprimeable number, because it can be changed into a prime (139706230211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1940364273 + ... + 1940364344.

Almost surely, 2^139706230212 is an apocalyptic number.

139706230212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

139706230212 is an abundant number, since it is smaller than the sum of its proper divisors (213440074026).

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

139706230212 is a wasteful number, since it uses less digits than its factorization.

139706230212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3880728627 (or 3880728622 counting only the distinct ones).

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

The spelling of 139706230212 in words is "one hundred thirty-nine billion, seven hundred six million, two hundred thirty thousand, two hundred twelve".