126923731 has 8 divisors (see below), whose sum is σ = 138740400. Its totient is φ = 115153440.

The previous prime is 126923651. The next prime is 126923777. The reversal of 126923731 is 137329621.

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 126923731 - 2⁷ = 126923603 is a prime.

It is a super-2 number, since 2×126923731² = 32219266981920722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126903731) 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, 5736 + ... + 16933.

It is an arithmetic number, because the mean of its divisors is an integer number (17342550).

Almost surely, 2^126923731 is an apocalyptic number.

126923731 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

126923731 is a deficient number, since it is larger than the sum of its proper divisors (11816669).

126923731 is a wasteful number, since it uses less digits than its factorization.

126923731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23189.

The product of its digits is 13608, while the sum is 34.

The square root of 126923731 is about 11266.0432717081. The cubic root of 126923731 is about 502.5519278366.

The spelling of 126923731 in words is "one hundred twenty-six million, nine hundred twenty-three thousand, seven hundred thirty-one".