80126321 has 12 divisors (see below), whose sum is σ = 93255876. Its totient is φ = 68555520.

The previous prime is 80126309. The next prime is 80126323. The reversal of 80126321 is 12362108.

It can be written as a sum of positive squares in 2 ways, for example, as 72863296 + 7263025 = 8536^2 + 2695^2 .

It is a de Polignac number, because none of the positive numbers 2^k-80126321 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 (80126323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17420 + ... + 21533.

It is an arithmetic number, because the mean of its divisors is an integer number (7771323).

Almost surely, 2^80126321 is an apocalyptic number.

It is an amenable number.

80126321 is a deficient number, since it is larger than the sum of its proper divisors (13129555).

80126321 is a wasteful number, since it uses less digits than its factorization.

80126321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38992 (or 38981 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 80126321 is about 8951.3306832001. The cubic root of 80126321 is about 431.1136106956.

Adding to 80126321 its reverse (12362108), we get a palindrome (92488429).

The spelling of 80126321 in words is "eighty million, one hundred twenty-six thousand, three hundred twenty-one".