612139122 has 24 divisors (see below), whose sum is σ = 1515773376. Its totient is φ = 174896856.

The previous prime is 612139081. The next prime is 612139127. The reversal of 612139122 is 221931216.

612139122 is a `hidden beast` number, since 612 + 1 + 39 + 12 + 2 = 666.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (612139127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2428998 + ... + 2429249.

It is an arithmetic number, because the mean of its divisors is an integer number (63157224).

Almost surely, 2^612139122 is an apocalyptic number.

612139122 is an abundant number, since it is smaller than the sum of its proper divisors (903634254).

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

612139122 is a wasteful number, since it uses less digits than its factorization.

612139122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4858262 (or 4858259 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 612139122 is about 24741.4454306938. The cubic root of 612139122 is about 849.0828039620.

The spelling of 612139122 in words is "six hundred twelve million, one hundred thirty-nine thousand, one hundred twenty-two".