139412220 has 48 divisors (see below), whose sum is σ = 391916448. Its totient is φ = 37027840.

The previous prime is 139412213. The next prime is 139412227. The reversal of 139412220 is 22214931.

139412220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (139412213) and next prime (139412227).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139412227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10900 + ... + 19940.

It is an arithmetic number, because the mean of its divisors is an integer number (8164926).

Almost surely, 2^139412220 is an apocalyptic number.

139412220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139412220 is an abundant number, since it is smaller than the sum of its proper divisors (252504228).

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

139412220 is a wasteful number, since it uses less digits than its factorization.

139412220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9310 (or 9308 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 139412220 is about 11807.2952025432. The cubic root of 139412220 is about 518.5217136525.

It can be divided in two parts, 13941 and 2220, that added together give a palindrome (16161).

The spelling of 139412220 in words is "one hundred thirty-nine million, four hundred twelve thousand, two hundred twenty".