42820599 has 12 divisors (see below), whose sum is σ = 57553784. Its totient is φ = 28318704.

The previous prime is 42820573. The next prime is 42820627. The reversal of 42820599 is 99502824.

It is not a de Polignac number, because 42820599 - 2⁵ = 42820567 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 (42820199) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 154449 + ... + 154725.

Almost surely, 2^42820599 is an apocalyptic number.

42820599 is a deficient number, since it is larger than the sum of its proper divisors (14733185).

42820599 is an equidigital number, since it uses as much as digits as its factorization.

42820599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734 (or 507 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 42820599 is about 6543.7450286514. The cubic root of 42820599 is about 349.8519074157.

The spelling of 42820599 in words is "forty-two million, eight hundred twenty thousand, five hundred ninety-nine".