42570845 has 4 divisors (see below), whose sum is σ = 51085020. Its totient is φ = 34056672.

The previous prime is 42570799. The next prime is 42570883. The reversal of 42570845 is 54807524.

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 14417209 + 28153636 = 3797^2 + 5306^2 .

It is a cyclic number.

It is not a de Polignac number, because 42570845 - 2¹⁴ = 42554461 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4257080 + ... + 4257089.

It is an arithmetic number, because the mean of its divisors is an integer number (12771255).

Almost surely, 2^42570845 is an apocalyptic number.

It is an amenable number.

42570845 is a deficient number, since it is larger than the sum of its proper divisors (8514175).

42570845 is an equidigital number, since it uses as much as digits as its factorization.

42570845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8514174.

The product of its (nonzero) digits is 44800, while the sum is 35.

The square root of 42570845 is about 6524.6337061938. The cubic root of 42570845 is about 349.1704025235.

The spelling of 42570845 in words is "forty-two million, five hundred seventy thousand, eight hundred forty-five".