126139412 has 12 divisors (see below), whose sum is σ = 252278880. Its totient is φ = 54059736.

The previous prime is 126139397. The next prime is 126139427. The reversal of 126139412 is 214931621.

It is an interprime number because it is at equal distance from previous prime (126139397) and next prime (126139427).

126139412 is an admirable number.

It is a super-2 number, since 2×126139412² = 31822302519411488, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2252462 + ... + 2252517.

It is an arithmetic number, because the mean of its divisors is an integer number (21023240).

Almost surely, 2^126139412 is an apocalyptic number.

It is an amenable number.

126139412 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

126139412 is a wasteful number, since it uses less digits than its factorization.

126139412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4504990 (or 4504988 counting only the distinct ones).

The product of its digits is 2592, while the sum is 29.

The square root of 126139412 is about 11231.1803475859. The cubic root of 126139412 is about 501.5146232002.

The spelling of 126139412 in words is "one hundred twenty-six million, one hundred thirty-nine thousand, four hundred twelve".