128137412 has 24 divisors (see below), whose sum is σ = 243403776. Its totient is φ = 58671648.

The previous prime is 128137391. The next prime is 128137421. The reversal of 128137412 is 214731821.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3098 + ... + 16305.

It is an arithmetic number, because the mean of its divisors is an integer number (10141824).

Almost surely, 2^128137412 is an apocalyptic number.

It is an amenable number.

128137412 is a deficient number, since it is larger than the sum of its proper divisors (115266364).

128137412 is a wasteful number, since it uses less digits than its factorization.

128137412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19547 (or 19545 counting only the distinct ones).

The product of its digits is 2688, while the sum is 29.

The square root of 128137412 is about 11319.7796798348. The cubic root of 128137412 is about 504.1486974115.

The spelling of 128137412 in words is "one hundred twenty-eight million, one hundred thirty-seven thousand, four hundred twelve".