42835865 has 4 divisors (see below), whose sum is σ = 51403044. Its totient is φ = 34268688.

The previous prime is 42835853. The next prime is 42835883. The reversal of 42835865 is 56853824.

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 4631104 + 38204761 = 2152^2 + 6181^2 .

It is a cyclic number.

It is not a de Polignac number, because 42835865 - 2⁸ = 42835609 is a prime.

It is a super-2 number, since 2×42835865² = 3669822660596450, which contains 22 as substring.

It is a Duffinian 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, 4283582 + ... + 4283591.

It is an arithmetic number, because the mean of its divisors is an integer number (12850761).

Almost surely, 2^42835865 is an apocalyptic number.

It is an amenable number.

42835865 is a deficient number, since it is larger than the sum of its proper divisors (8567179).

42835865 is an equidigital number, since it uses as much as digits as its factorization.

42835865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8567178.

The product of its digits is 230400, while the sum is 41.

The square root of 42835865 is about 6544.9113821350. The cubic root of 42835865 is about 349.8934777874.

The spelling of 42835865 in words is "forty-two million, eight hundred thirty-five thousand, eight hundred sixty-five".