126253723684 has 81 divisors (see below), whose sum is σ = 251425170129. Its totient is φ = 55430232000.

The previous prime is 126253723681. The next prime is 126253723723. The reversal of 126253723684 is 486327352621.

The square root of 126253723684 is 355322.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 36205717284 + 90048006400 = 190278^2 + 300080^2 .

It is not an unprimeable number, because it can be changed into a prime (126253723681) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 242329344 + ... + 242329864.

Almost surely, 2^126253723684 is an apocalyptic number.

126253723684 is the 355322-nd square number.

It is an amenable number.

126253723684 is a deficient number, since it is larger than the sum of its proper divisors (125171446445).

126253723684 is an equidigital number, since it uses as much as digits as its factorization.

126253723684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130 (or 565 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 49.

Multiplying 126253723684 by its sum of digits (49), we get a square (6186432460516 = 2487254²).

The spelling of 126253723684 in words is "one hundred twenty-six billion, two hundred fifty-three million, seven hundred twenty-three thousand, six hundred eighty-four".