126217744125 has 128 divisors (see below), whose sum is σ = 235907223552. Its totient is φ = 59401440000.

The previous prime is 126217744117. The next prime is 126217744127. The reversal of 126217744125 is 521447712621.

It is not a de Polignac number, because 126217744125 - 2³ = 126217744117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126217744127) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 29619495 + ... + 29623755.

It is an arithmetic number, because the mean of its divisors is an integer number (1843025184).

Almost surely, 2^126217744125 is an apocalyptic number.

126217744125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126217744125 is a deficient number, since it is larger than the sum of its proper divisors (109689479427).

126217744125 is a wasteful number, since it uses less digits than its factorization.

126217744125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4500 (or 4490 counting only the distinct ones).

The product of its digits is 188160, while the sum is 42.

The spelling of 126217744125 in words is "one hundred twenty-six billion, two hundred seventeen million, seven hundred forty-four thousand, one hundred twenty-five".