126403841 has 2 divisors, whose sum is σ = 126403842. Its totient is φ = 126403840.

The previous prime is 126403831. The next prime is 126403867. The reversal of 126403841 is 148304621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125529616 + 874225 = 11204^2 + 935^2 .

It is a cyclic number.

It is not a de Polignac number, because 126403841 - 2²² = 122209537 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (126403801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63201920 + 63201921.

It is an arithmetic number, because the mean of its divisors is an integer number (63201921).

Almost surely, 2^126403841 is an apocalyptic number.

It is an amenable number.

126403841 is a deficient number, since it is larger than the sum of its proper divisors (1).

126403841 is an equidigital number, since it uses as much as digits as its factorization.

126403841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 126403841 is about 11242.9462775555. The cubic root of 126403841 is about 501.8648242146.

The spelling of 126403841 in words is "one hundred twenty-six million, four hundred three thousand, eight hundred forty-one".