126931967 has 4 divisors (see below), whose sum is σ = 127125240. Its totient is φ = 126738696.

The previous prime is 126931933. The next prime is 126931997. The reversal of 126931967 is 769139621.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126931967 is a prime.

It is a super-2 number, since 2×126931967² = 32223448492978178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126931997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95648 + ... + 96965.

It is an arithmetic number, because the mean of its divisors is an integer number (31781310).

Almost surely, 2^126931967 is an apocalyptic number.

126931967 is a deficient number, since it is larger than the sum of its proper divisors (193273).

126931967 is an equidigital number, since it uses as much as digits as its factorization.

126931967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193272.

The product of its digits is 122472, while the sum is 44.

The square root of 126931967 is about 11266.4087889620. The cubic root of 126931967 is about 502.5627976929.

The spelling of 126931967 in words is "one hundred twenty-six million, nine hundred thirty-one thousand, nine hundred sixty-seven".