126321954724 has 81 divisors (see below), whose sum is σ = 262647265377. Its totient is φ = 53005618848.

The previous prime is 126321954719. The next prime is 126321954749. The reversal of 126321954724 is 427459123621.

The square root of 126321954724 is 355418.

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., 91065132900 + 35256821824 = 301770^2 + 187768^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 263719917 + ... + 263720395.

Almost surely, 2^126321954724 is an apocalyptic number.

126321954724 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

126321954724 is the 355418-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126321954724

126321954724 is an abundant number, since it is smaller than the sum of its proper divisors (136325310653).

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

126321954724 is an frugal number, since it uses more digits than its factorization.

126321954724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082 (or 541 counting only the distinct ones).

The product of its digits is 725760, while the sum is 46.

The spelling of 126321954724 in words is "one hundred twenty-six billion, three hundred twenty-one million, nine hundred fifty-four thousand, seven hundred twenty-four".