126321199 has 2 divisors, whose sum is σ = 126321200. Its totient is φ = 126321198.

The previous prime is 126321193. The next prime is 126321227. The reversal of 126321199 is 991123621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126321199 - 2⁹ = 126320687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126321193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63160599 + 63160600.

It is an arithmetic number, because the mean of its divisors is an integer number (63160600).

Almost surely, 2^126321199 is an apocalyptic number.

126321199 is a deficient number, since it is larger than the sum of its proper divisors (1).

126321199 is an equidigital number, since it uses as much as digits as its factorization.

126321199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 34.

The square root of 126321199 is about 11239.2703944696. The cubic root of 126321199 is about 501.7554283964.

It can be divided in two parts, 12632 and 1199, that added together give a palindrome (13831).

The spelling of 126321199 in words is "one hundred twenty-six million, three hundred twenty-one thousand, one hundred ninety-nine".