126501636 has 12 divisors (see below), whose sum is σ = 295170512. Its totient is φ = 42167208.

The previous prime is 126501629. The next prime is 126501637. The reversal of 126501636 is 636105621.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (126501637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5270890 + ... + 5270913.

Almost surely, 2^126501636 is an apocalyptic number.

It is an amenable number.

126501636 is an abundant number, since it is smaller than the sum of its proper divisors (168668876).

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

126501636 is a wasteful number, since it uses less digits than its factorization.

126501636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10541810 (or 10541808 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 126501636 is about 11247.2946080380. The cubic root of 126501636 is about 501.9942169564.

The spelling of 126501636 in words is "one hundred twenty-six million, five hundred one thousand, six hundred thirty-six".