126106399 has 2 divisors, whose sum is σ = 126106400. Its totient is φ = 126106398.

The previous prime is 126106381. The next prime is 126106427. The reversal of 126106399 is 993601621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126106399 - 2⁵ = 126106367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126106319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63053199 + 63053200.

It is an arithmetic number, because the mean of its divisors is an integer number (63053200).

Almost surely, 2^126106399 is an apocalyptic number.

126106399 is a deficient number, since it is larger than the sum of its proper divisors (1).

126106399 is an equidigital number, since it uses as much as digits as its factorization.

126106399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 126106399 is about 11229.7105483623. The cubic root of 126106399 is about 501.4708675213.

The spelling of 126106399 in words is "one hundred twenty-six million, one hundred six thousand, three hundred ninety-nine".