80404642 has 16 divisors (see below), whose sum is σ = 126067392. Its totient is φ = 38388240.

The previous prime is 80404627. The next prime is 80404651. The reversal of 80404642 is 24640408.

It is a self number, because there is not a number n which added to its sum of digits gives 80404642.

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 in 7 ways as a sum of consecutive naturals, for example, 35092 + ... + 37312.

It is an arithmetic number, because the mean of its divisors is an integer number (7879212).

Almost surely, 2^80404642 is an apocalyptic number.

80404642 is a deficient number, since it is larger than the sum of its proper divisors (45662750).

80404642 is a wasteful number, since it uses less digits than its factorization.

80404642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3033.

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 80404642 is about 8966.8635542201. The cubic root of 80404642 is about 431.6121955553.

The spelling of 80404642 in words is "eighty million, four hundred four thousand, six hundred forty-two".