139212141 has 16 divisors (see below), whose sum is σ = 188847360. Its totient is φ = 91203840.

The previous prime is 139212137. The next prime is 139212149. The reversal of 139212141 is 141212931.

It is not a de Polignac number, because 139212141 - 2² = 139212137 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139212149) 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 15 ways as a sum of consecutive naturals, for example, 53961 + ... + 56481.

It is an arithmetic number, because the mean of its divisors is an integer number (11802960).

Almost surely, 2^139212141 is an apocalyptic number.

It is an amenable number.

139212141 is a deficient number, since it is larger than the sum of its proper divisors (49635219).

139212141 is a wasteful number, since it uses less digits than its factorization.

139212141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2836.

The product of its digits is 432, while the sum is 24.

The square root of 139212141 is about 11798.8194748458. The cubic root of 139212141 is about 518.2735408215.

The spelling of 139212141 in words is "one hundred thirty-nine million, two hundred twelve thousand, one hundred forty-one".