126316382273 has 4 divisors (see below), whose sum is σ = 128046743748. Its totient is φ = 124586020800.

The previous prime is 126316382267. The next prime is 126316382321. The reversal of 126316382273 is 372283613621.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 68988699649 + 57327682624 = 262657^2 + 239432^2 .

It is a cyclic number.

It is not a de Polignac number, because 126316382273 - 2³⁰ = 125242640449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (126316382263) 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, 865180628 + ... + 865180773.

It is an arithmetic number, because the mean of its divisors is an integer number (32011685937).

Almost surely, 2^126316382273 is an apocalyptic number.

It is an amenable number.

126316382273 is a deficient number, since it is larger than the sum of its proper divisors (1730361475).

126316382273 is an equidigital number, since it uses as much as digits as its factorization.

126316382273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730361474.

The product of its digits is 435456, while the sum is 44.

Adding to 126316382273 its reverse (372283613621), we get a palindrome (498599995894).

The spelling of 126316382273 in words is "one hundred twenty-six billion, three hundred sixteen million, three hundred eighty-two thousand, two hundred seventy-three".