80642134 has 4 divisors (see below), whose sum is σ = 120963204. Its totient is φ = 40321066.

The previous prime is 80642123. The next prime is 80642141. The reversal of 80642134 is 43124608.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20160532 + ... + 20160535.

It is an arithmetic number, because the mean of its divisors is an integer number (30240801).

Almost surely, 2^80642134 is an apocalyptic number.

80642134 is a deficient number, since it is larger than the sum of its proper divisors (40321070).

80642134 is a wasteful number, since it uses less digits than its factorization.

80642134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40321069.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 80642134 is about 8980.0965473652. The cubic root of 80642134 is about 432.0367302732.

The spelling of 80642134 in words is "eighty million, six hundred forty-two thousand, one hundred thirty-four".