80542534 has 8 divisors (see below), whose sum is σ = 120938688. Its totient is φ = 40229640.

The previous prime is 80542531. The next prime is 80542543. The reversal of 80542534 is 43524508.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 80542496 and 80542505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80542531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18337 + ... + 22300.

It is an arithmetic number, because the mean of its divisors is an integer number (15117336).

Almost surely, 2^80542534 is an apocalyptic number.

80542534 is a deficient number, since it is larger than the sum of its proper divisors (40396154).

80542534 is a wasteful number, since it uses less digits than its factorization.

80542534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41630.

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 80542534 is about 8974.5492365912. The cubic root of 80542534 is about 431.8587894376.

The spelling of 80542534 in words is "eighty million, five hundred forty-two thousand, five hundred thirty-four".