126332621 has 2 divisors, whose sum is σ = 126332622. Its totient is φ = 126332620.

The previous prime is 126332617. The next prime is 126332639. The reversal of 126332621 is 126233621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108784900 + 17547721 = 10430^2 + 4189^2 .

It is a cyclic number.

It is not a de Polignac number, because 126332621 - 2² = 126332617 is a prime.

It is a super-2 number, since 2×126332621² = 31919862257459282, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126332681) by changing a digit.

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 as a sum of consecutive naturals, namely, 63166310 + 63166311.

It is an arithmetic number, because the mean of its divisors is an integer number (63166311).

Almost surely, 2^126332621 is an apocalyptic number.

It is an amenable number.

126332621 is a deficient number, since it is larger than the sum of its proper divisors (1).

126332621 is an equidigital number, since it uses as much as digits as its factorization.

126332621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 26.

The square root of 126332621 is about 11239.7785120526. The cubic root of 126332621 is about 501.7705508985.

The spelling of 126332621 in words is "one hundred twenty-six million, three hundred thirty-two thousand, six hundred twenty-one".