126743723 has 8 divisors (see below), whose sum is σ = 129320928. Its totient is φ = 124173504.

The previous prime is 126743713. The next prime is 126743791. The reversal of 126743723 is 327347621.

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

It is a cyclic number.

It is not a de Polignac number, because 126743723 - 2⁴ = 126743707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126743713) 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 7 ways as a sum of consecutive naturals, for example, 50015 + ... + 52487.

It is an arithmetic number, because the mean of its divisors is an integer number (16165116).

Almost surely, 2^126743723 is an apocalyptic number.

126743723 is a deficient number, since it is larger than the sum of its proper divisors (2577205).

126743723 is an equidigital number, since it uses as much as digits as its factorization.

126743723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3493.

The product of its digits is 42336, while the sum is 35.

The square root of 126743723 is about 11258.0514743893. The cubic root of 126743723 is about 502.3142360968.

The spelling of 126743723 in words is "one hundred twenty-six million, seven hundred forty-three thousand, seven hundred twenty-three".