126158399 has 2 divisors, whose sum is σ = 126158400. Its totient is φ = 126158398.

The previous prime is 126158369. The next prime is 126158401. The reversal of 126158399 is 993851621.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 126158399 - 2⁸ = 126158143 is a prime.

Together with 126158401, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126158369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63079199 + 63079200.

It is an arithmetic number, because the mean of its divisors is an integer number (63079200).

Almost surely, 2^126158399 is an apocalyptic number.

126158399 is a deficient number, since it is larger than the sum of its proper divisors (1).

126158399 is an equidigital number, since it uses as much as digits as its factorization.

126158399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 44.

The square root of 126158399 is about 11232.0255964808. The cubic root of 126158399 is about 501.5397852551.

The spelling of 126158399 in words is "one hundred twenty-six million, one hundred fifty-eight thousand, three hundred ninety-nine".