126567899 has 2 divisors, whose sum is σ = 126567900. Its totient is φ = 126567898.

The previous prime is 126567841. The next prime is 126567971. The reversal of 126567899 is 998765621.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126567899 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126567899.

It is not a weakly prime, because it can be changed into another prime (126567829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63283949 + 63283950.

It is an arithmetic number, because the mean of its divisors is an integer number (63283950).

Almost surely, 2^126567899 is an apocalyptic number.

126567899 is a deficient number, since it is larger than the sum of its proper divisors (1).

126567899 is an equidigital number, since it uses as much as digits as its factorization.

126567899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1632960, while the sum is 53.

The square root of 126567899 is about 11250.2399529966. The cubic root of 126567899 is about 502.0818517559.

The spelling of 126567899 in words is "one hundred twenty-six million, five hundred sixty-seven thousand, eight hundred ninety-nine".