80045642 has 4 divisors (see below), whose sum is σ = 120068466. Its totient is φ = 40022820.

The previous prime is 80045591. The next prime is 80045663. The reversal of 80045642 is 24654008.

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

It can be written as a sum of positive squares in only one way, i.e., 76545001 + 3500641 = 8749^2 + 1871^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20011409 + ... + 20011412.

Almost surely, 2^80045642 is an apocalyptic number.

80045642 is a deficient number, since it is larger than the sum of its proper divisors (40022824).

80045642 is a wasteful number, since it uses less digits than its factorization.

80045642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40022823.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 80045642 is about 8946.8230115500. The cubic root of 80045642 is about 430.9688663511.

The spelling of 80045642 in words is "eighty million, forty-five thousand, six hundred forty-two".