80142057 has 12 divisors (see below), whose sum is σ = 121853680. Its totient is φ = 50615928.

The previous prime is 80142053. The next prime is 80142071. The reversal of 80142057 is 75024108.

It is not a de Polignac number, because 80142057 - 2² = 80142053 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80142057.

It is not an unprimeable number, because it can be changed into a prime (80142053) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 234163 + ... + 234504.

Almost surely, 2^80142057 is an apocalyptic number.

It is an amenable number.

80142057 is a deficient number, since it is larger than the sum of its proper divisors (41711623).

80142057 is a wasteful number, since it uses less digits than its factorization.

80142057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468692 (or 468689 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 80142057 is about 8952.2096155083. The cubic root of 80142057 is about 431.1418309676.

The spelling of 80142057 in words is "eighty million, one hundred forty-two thousand, fifty-seven".