126573401 has 2 divisors, whose sum is σ = 126573402. Its totient is φ = 126573400.

The previous prime is 126573373. The next prime is 126573409. The reversal of 126573401 is 104375621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123187801 + 3385600 = 11099^2 + 1840^2 .

It is a cyclic number.

It is not a de Polignac number, because 126573401 - 2¹⁸ = 126311257 is a prime.

It is not a weakly prime, because it can be changed into another prime (126573409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63286700 + 63286701.

It is an arithmetic number, because the mean of its divisors is an integer number (63286701).

Almost surely, 2^126573401 is an apocalyptic number.

It is an amenable number.

126573401 is a deficient number, since it is larger than the sum of its proper divisors (1).

126573401 is an equidigital number, since it uses as much as digits as its factorization.

126573401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 126573401 is about 11250.4844784569. The cubic root of 126573401 is about 502.0891269401.

The spelling of 126573401 in words is "one hundred twenty-six million, five hundred seventy-three thousand, four hundred one".