126931966 has 8 divisors (see below), whose sum is σ = 217597680. Its totient is φ = 54399408.

The previous prime is 126931933. The next prime is 126931997. The reversal of 126931966 is 669139621.

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

It is a super-2 number, since 2×126931966² = 32223447985250312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 4533271 + ... + 4533298.

It is an arithmetic number, because the mean of its divisors is an integer number (27199710).

Almost surely, 2^126931966 is an apocalyptic number.

126931966 is a deficient number, since it is larger than the sum of its proper divisors (90665714).

126931966 is an equidigital number, since it uses as much as digits as its factorization.

126931966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9066578.

The product of its digits is 104976, while the sum is 43.

The square root of 126931966 is about 11266.4087445823. The cubic root of 126931966 is about 502.5627963732.

The spelling of 126931966 in words is "one hundred twenty-six million, nine hundred thirty-one thousand, nine hundred sixty-six".