80142885 has 16 divisors (see below), whose sum is σ = 142476480. Its totient is φ = 42742800.

The previous prime is 80142869. The next prime is 80142889. The reversal of 80142885 is 58824108.

It is not a de Polignac number, because 80142885 - 2⁴ = 80142869 is a prime.

It is a super-2 number, since 2×80142885² = 12845764032246450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80142889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 296691 + ... + 296960.

It is an arithmetic number, because the mean of its divisors is an integer number (8904780).

Almost surely, 2^80142885 is an apocalyptic number.

It is an amenable number.

80142885 is a deficient number, since it is larger than the sum of its proper divisors (62333595).

80142885 is a wasteful number, since it uses less digits than its factorization.

80142885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593665 (or 593659 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 80142885 is about 8952.2558609548. The cubic root of 80142885 is about 431.1433157652.

The spelling of 80142885 in words is "eighty million, one hundred forty-two thousand, eight hundred eighty-five".