126576271421 has 4 divisors (see below), whose sum is σ = 126631960572. Its totient is φ = 126520582272.

The previous prime is 126576271397. The next prime is 126576271429. The reversal of 126576271421 is 124172675621.

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 96295399225 + 30280872196 = 310315^2 + 174014^2 .

It is a cyclic number.

It is not a de Polignac number, because 126576271421 - 2³⁴ = 109396402237 is a prime.

It is a super-2 number, since 2×126576271421² (a number of 23 digits) 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 (126576271429) by changing a digit.

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, 27841166 + ... + 27845711.

It is an arithmetic number, because the mean of its divisors is an integer number (31657990143).

Almost surely, 2^126576271421 is an apocalyptic number.

It is an amenable number.

126576271421 is a deficient number, since it is larger than the sum of its proper divisors (55689151).

126576271421 is an equidigital number, since it uses as much as digits as its factorization.

126576271421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55689150.

The product of its digits is 282240, while the sum is 44.

The spelling of 126576271421 in words is "one hundred twenty-six billion, five hundred seventy-six million, two hundred seventy-one thousand, four hundred twenty-one".