80431942 has 4 divisors (see below), whose sum is σ = 120647916. Its totient is φ = 40215970.

The previous prime is 80431937. The next prime is 80431951. The reversal of 80431942 is 24913408.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20107984 + ... + 20107987.

It is an arithmetic number, because the mean of its divisors is an integer number (30161979).

Almost surely, 2^80431942 is an apocalyptic number.

80431942 is a deficient number, since it is larger than the sum of its proper divisors (40215974).

80431942 is a wasteful number, since it uses less digits than its factorization.

80431942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40215973.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 80431942 is about 8968.3856964339. The cubic root of 80431942 is about 431.6610388365.

The spelling of 80431942 in words is "eighty million, four hundred thirty-one thousand, nine hundred forty-two".