42825019 has 4 divisors (see below), whose sum is σ = 42904720. Its totient is φ = 42745320.

The previous prime is 42825001. The next prime is 42825049. The reversal of 42825019 is 91052824.

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 42825019 - 2⁷ = 42824891 is a prime.

It is a super-2 number, since 2×42825019² = 3667964504700722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42825049) 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, 39039 + ... + 40120.

It is an arithmetic number, because the mean of its divisors is an integer number (10726180).

Almost surely, 2^42825019 is an apocalyptic number.

42825019 is a deficient number, since it is larger than the sum of its proper divisors (79701).

42825019 is an equidigital number, since it uses as much as digits as its factorization.

42825019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79700.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 42825019 is about 6544.0827470319. The cubic root of 42825019 is about 349.8639443968.

The spelling of 42825019 in words is "forty-two million, eight hundred twenty-five thousand, nineteen".