80126739 has 80 divisors (see below), whose sum is σ = 154725120. Its totient is φ = 40098240.

The previous prime is 80126731. The next prime is 80126749. The reversal of 80126739 is 93762108.

It is not a de Polignac number, because 80126739 - 2³ = 80126731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80126731) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 180652 + ... + 181094.

It is an arithmetic number, because the mean of its divisors is an integer number (1934064).

Almost surely, 2^80126739 is an apocalyptic number.

80126739 is a deficient number, since it is larger than the sum of its proper divisors (74598381).

80126739 is a wasteful number, since it uses less digits than its factorization.

80126739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502 (or 493 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 80126739 is about 8951.3540316535. The cubic root of 80126739 is about 431.1143603668.

The spelling of 80126739 in words is "eighty million, one hundred twenty-six thousand, seven hundred thirty-nine".