42825799 has 4 divisors (see below), whose sum is σ = 43551720. Its totient is φ = 42099880.

The previous prime is 42825781. The next prime is 42825833. The reversal of 42825799 is 99752824.

42825799 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 42825799 - 2¹⁷ = 42694727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42825719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362872 + ... + 362989.

It is an arithmetic number, because the mean of its divisors is an integer number (10887930).

Almost surely, 2^42825799 is an apocalyptic number.

42825799 is a deficient number, since it is larger than the sum of its proper divisors (725921).

42825799 is an equidigital number, since it uses as much as digits as its factorization.

42825799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725920.

The product of its digits is 362880, while the sum is 46.

The square root of 42825799 is about 6544.1423425839. The cubic root of 42825799 is about 349.8660684840.

Subtracting 42825799 from its reverse (99752824), we obtain a square (56927025 = 7545²).

The spelling of 42825799 in words is "forty-two million, eight hundred twenty-five thousand, seven hundred ninety-nine".