126934492447 has 4 divisors (see below), whose sum is σ = 145067991376. Its totient is φ = 108800993520.

The previous prime is 126934492417. The next prime is 126934492481. The reversal of 126934492447 is 744294439621.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 126934492447 - 2²³ = 126926103839 is a prime.

It is a super-2 number, since 2×126934492447² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126934492417) 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, 9066749454 + ... + 9066749467.

It is an arithmetic number, because the mean of its divisors is an integer number (36266997844).

Almost surely, 2^126934492447 is an apocalyptic number.

126934492447 is a deficient number, since it is larger than the sum of its proper divisors (18133498929).

126934492447 is an equidigital number, since it uses as much as digits as its factorization.

126934492447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18133498928.

The product of its digits is 10450944, while the sum is 55.

The spelling of 126934492447 in words is "one hundred twenty-six billion, nine hundred thirty-four million, four hundred ninety-two thousand, four hundred forty-seven".