42845761 has 4 divisors (see below), whose sum is σ = 48966592. Its totient is φ = 36724932.

The previous prime is 42845753. The next prime is 42845767. The reversal of 42845761 is 16754824.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42845761 - 2³ = 42845753 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 42845761.

It is not an unprimeable number, because it can be changed into a prime (42845767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3060405 + ... + 3060418.

It is an arithmetic number, because the mean of its divisors is an integer number (12241648).

Almost surely, 2^42845761 is an apocalyptic number.

It is an amenable number.

42845761 is a deficient number, since it is larger than the sum of its proper divisors (6120831).

42845761 is an equidigital number, since it uses as much as digits as its factorization.

42845761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6120830.

The product of its digits is 53760, while the sum is 37.

The square root of 42845761 is about 6545.6673456570. The cubic root of 42845761 is about 349.9204200024.

The spelling of 42845761 in words is "forty-two million, eight hundred forty-five thousand, seven hundred sixty-one".