126705999 has 8 divisors (see below), whose sum is σ = 193075840. Its totient is φ = 72403416.

The previous prime is 126705983. The next prime is 126706039. The reversal of 126705999 is 999507621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 126705999 - 2⁴ = 126705983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126705979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3016789 + ... + 3016830.

It is an arithmetic number, because the mean of its divisors is an integer number (24134480).

Almost surely, 2^126705999 is an apocalyptic number.

126705999 is a deficient number, since it is larger than the sum of its proper divisors (66369841).

126705999 is an equidigital number, since it uses as much as digits as its factorization.

126705999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6033629.

The product of its (nonzero) digits is 306180, while the sum is 48.

The square root of 126705999 is about 11256.3759265582. The cubic root of 126705999 is about 502.2643948841.

The spelling of 126705999 in words is "one hundred twenty-six million, seven hundred five thousand, nine hundred ninety-nine".