126924521 has 2 divisors, whose sum is σ = 126924522. Its totient is φ = 126924520.

The previous prime is 126924449. The next prime is 126924527. The reversal of 126924521 is 125429621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95160025 + 31764496 = 9755^2 + 5636^2 .

It is a cyclic number.

It is not a de Polignac number, because 126924521 - 2¹⁰ = 126923497 is a prime.

It is a super-2 number, since 2×126924521² = 32219668062158882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126924527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63462260 + 63462261.

It is an arithmetic number, because the mean of its divisors is an integer number (63462261).

Almost surely, 2^126924521 is an apocalyptic number.

It is an amenable number.

126924521 is a deficient number, since it is larger than the sum of its proper divisors (1).

126924521 is an equidigital number, since it uses as much as digits as its factorization.

126924521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 32.

The square root of 126924521 is about 11266.0783327651. The cubic root of 126924521 is about 502.5529704974.

The spelling of 126924521 in words is "one hundred twenty-six million, nine hundred twenty-four thousand, five hundred twenty-one".