42870577 has 4 divisors (see below), whose sum is σ = 43143796. Its totient is φ = 42597360.

The previous prime is 42870571. The next prime is 42870601. The reversal of 42870577 is 77507824.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3444736 + 39425841 = 1856^2 + 6279^2 .

It is a cyclic number.

It is not a de Polignac number, because 42870577 - 2⁷ = 42870449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42870571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136374 + ... + 136687.

It is an arithmetic number, because the mean of its divisors is an integer number (10785949).

Almost surely, 2^42870577 is an apocalyptic number.

It is an amenable number.

42870577 is a deficient number, since it is larger than the sum of its proper divisors (273219).

42870577 is a wasteful number, since it uses less digits than its factorization.

42870577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273218.

The product of its (nonzero) digits is 109760, while the sum is 40.

The square root of 42870577 is about 6547.5626762941. The cubic root of 42870577 is about 349.9879642120.

The spelling of 42870577 in words is "forty-two million, eight hundred seventy thousand, five hundred seventy-seven".