126793281 has 4 divisors (see below), whose sum is σ = 169057712. Its totient is φ = 84528852.

The previous prime is 126793267. The next prime is 126793321. The reversal of 126793281 is 182397621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 126793281 - 2⁷ = 126793153 is a prime.

It is a super-2 number, since 2×126793281² = 32153072213489922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (126793201) 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, 21132211 + ... + 21132216.

It is an arithmetic number, because the mean of its divisors is an integer number (42264428).

Almost surely, 2^126793281 is an apocalyptic number.

It is an amenable number.

126793281 is a deficient number, since it is larger than the sum of its proper divisors (42264431).

126793281 is an equidigital number, since it uses as much as digits as its factorization.

126793281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42264430.

The product of its digits is 36288, while the sum is 39.

The square root of 126793281 is about 11260.2522618279. The cubic root of 126793281 is about 502.3796974453.

The spelling of 126793281 in words is "one hundred twenty-six million, seven hundred ninety-three thousand, two hundred eighty-one".