126456641 has 2 divisors, whose sum is σ = 126456642. Its totient is φ = 126456640.

The previous prime is 126456623. The next prime is 126456653. The reversal of 126456641 is 146654621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122766400 + 3690241 = 11080^2 + 1921^2 .

It is an emirp because it is prime and its reverse (146654621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126456641 - 2²⁶ = 59347777 is a prime.

It is not a weakly prime, because it can be changed into another prime (126456601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63228320 + 63228321.

It is an arithmetic number, because the mean of its divisors is an integer number (63228321).

Almost surely, 2^126456641 is an apocalyptic number.

It is an amenable number.

126456641 is a deficient number, since it is larger than the sum of its proper divisors (1).

126456641 is an equidigital number, since it uses as much as digits as its factorization.

126456641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 35.

The square root of 126456641 is about 11245.2941713412. The cubic root of 126456641 is about 501.9346922761.

The spelling of 126456641 in words is "one hundred twenty-six million, four hundred fifty-six thousand, six hundred forty-one".