125121036 has 12 divisors (see below), whose sum is σ = 291949112. Its totient is φ = 41707008.

The previous prime is 125121019. The next prime is 125121067. The reversal of 125121036 is 630121521.

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

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 3 ways as a sum of consecutive naturals, for example, 5213365 + ... + 5213388.

Almost surely, 2^125121036 is an apocalyptic number.

It is an amenable number.

125121036 is an abundant number, since it is smaller than the sum of its proper divisors (166828076).

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

125121036 is a wasteful number, since it uses less digits than its factorization.

125121036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10426760 (or 10426758 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 125121036 is about 11185.7514722972. The cubic root of 125121036 is about 500.1613292735.

Adding to 125121036 its reverse (630121521), we get a palindrome (755242557).

The spelling of 125121036 in words is "one hundred twenty-five million, one hundred twenty-one thousand, thirty-six".