126155499 has 4 divisors (see below), whose sum is σ = 168207336. Its totient is φ = 84103664.

The previous prime is 126155479. The next prime is 126155501. The reversal of 126155499 is 994551621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 126155499 - 2⁵ = 126155467 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126155499.

It is not an unprimeable number, because it can be changed into a prime (126155479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21025914 + ... + 21025919.

It is an arithmetic number, because the mean of its divisors is an integer number (42051834).

Almost surely, 2^126155499 is an apocalyptic number.

126155499 is a deficient number, since it is larger than the sum of its proper divisors (42051837).

126155499 is an equidigital number, since it uses as much as digits as its factorization.

126155499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42051836.

The product of its digits is 97200, while the sum is 42.

The square root of 126155499 is about 11231.8965005915. The cubic root of 126155499 is about 501.5359422648.

The spelling of 126155499 in words is "one hundred twenty-six million, one hundred fifty-five thousand, four hundred ninety-nine".