80634542 has 4 divisors (see below), whose sum is σ = 120951816. Its totient is φ = 40317270.

The previous prime is 80634539. The next prime is 80634557. The reversal of 80634542 is 24543608.

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

It is a junction number, because it is equal to n+sod(n) for n = 80634499 and 80634508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20158634 + ... + 20158637.

It is an arithmetic number, because the mean of its divisors is an integer number (30237954).

Almost surely, 2^80634542 is an apocalyptic number.

80634542 is a deficient number, since it is larger than the sum of its proper divisors (40317274).

80634542 is a wasteful number, since it uses less digits than its factorization.

80634542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40317273.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 80634542 is about 8979.6738248112. The cubic root of 80634542 is about 432.0231719109.

The spelling of 80634542 in words is "eighty million, six hundred thirty-four thousand, five hundred forty-two".