126136556 has 24 divisors (see below), whose sum is σ = 271679520. Its totient is φ = 49900032.

The previous prime is 126136537. The next prime is 126136561. The reversal of 126136556 is 655631621.

It is a super-2 number, since 2×126136556² = 31820861519082272, which contains 22 as substring.

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, 172901 + ... + 173628.

It is an arithmetic number, because the mean of its divisors is an integer number (11319980).

Almost surely, 2^126136556 is an apocalyptic number.

It is an amenable number.

126136556 is an abundant number, since it is smaller than the sum of its proper divisors (145542964).

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

126136556 is a wasteful number, since it uses less digits than its factorization.

126136556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346553 (or 346551 counting only the distinct ones).

The product of its digits is 32400, while the sum is 35.

The square root of 126136556 is about 11231.0532008356. The cubic root of 126136556 is about 501.5108381380.

The spelling of 126136556 in words is "one hundred twenty-six million, one hundred thirty-six thousand, five hundred fifty-six".