80530642 has 12 divisors (see below), whose sum is σ = 123867198. Its totient is φ = 39243600.

The previous prime is 80530627. The next prime is 80530643. The reversal of 80530642 is 24603508.

It can be written as a sum of positive squares in only one way, i.e., 79548561 + 982081 = 8919^2 + 991^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 80530642.

It is not an unprimeable number, because it can be changed into a prime (80530643) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 80767 + ... + 81757.

Almost surely, 2^80530642 is an apocalyptic number.

80530642 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

80530642 is a deficient number, since it is larger than the sum of its proper divisors (43336556).

80530642 is an frugal number, since it uses more digits than its factorization.

80530642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2025 (or 1034 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 80530642 is about 8973.8866718942. The cubic root of 80530642 is about 431.8375339293.

The spelling of 80530642 in words is "eighty million, five hundred thirty thousand, six hundred forty-two".