126057213020 has 24 divisors (see below), whose sum is σ = 267694534800. Its totient is φ = 49856335232.

The previous prime is 126057212977. The next prime is 126057213053. The reversal of 126057213020 is 20312750621.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35407550 + ... + 35411109.

It is an arithmetic number, because the mean of its divisors is an integer number (11153938950).

Almost surely, 2^126057213020 is an apocalyptic number.

126057213020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126057213020 is an abundant number, since it is smaller than the sum of its proper divisors (141637321780).

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

126057213020 is a wasteful number, since it uses less digits than its factorization.

126057213020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70818757 (or 70818755 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

Adding to 126057213020 its reverse (20312750621), we get a palindrome (146369963641).

The spelling of 126057213020 in words is "one hundred twenty-six billion, fifty-seven million, two hundred thirteen thousand, twenty".