80109642 has 16 divisors (see below), whose sum is σ = 165388032. Its totient is φ = 25841760.

The previous prime is 80109641. The next prime is 80109671. The reversal of 80109642 is 24690108.

It is not an unprimeable number, because it can be changed into a prime (80109641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215163 + ... + 215534.

It is an arithmetic number, because the mean of its divisors is an integer number (10336752).

Almost surely, 2^80109642 is an apocalyptic number.

80109642 is an abundant number, since it is smaller than the sum of its proper divisors (85278390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80109642 is a wasteful number, since it uses less digits than its factorization.

80109642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430733.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 80109642 is about 8950.3989855201. The cubic root of 80109642 is about 431.0836952537.

The spelling of 80109642 in words is "eighty million, one hundred nine thousand, six hundred forty-two".