126620401 has 8 divisors (see below), whose sum is σ = 131612544. Its totient is φ = 121710960.

The previous prime is 126620393. The next prime is 126620407. The reversal of 126620401 is 104026621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 126620401 - 2³ = 126620393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126620407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17545 + ... + 23686.

It is an arithmetic number, because the mean of its divisors is an integer number (16451568).

Almost surely, 2^126620401 is an apocalyptic number.

It is an amenable number.

126620401 is a deficient number, since it is larger than the sum of its proper divisors (4992143).

126620401 is an equidigital number, since it uses as much as digits as its factorization.

126620401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41351.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 126620401 is about 11252.5730835218. The cubic root of 126620401 is about 502.1512655055.

The spelling of 126620401 in words is "one hundred twenty-six million, six hundred twenty thousand, four hundred one".