42025839 has 4 divisors (see below), whose sum is σ = 56034456. Its totient is φ = 28017224.

The previous prime is 42025831. The next prime is 42025871. The reversal of 42025839 is 93852024.

It is a happy number.

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 42025839 - 2³ = 42025831 is a prime.

It is a super-2 number, since 2×42025839² = 3532342287307842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42025831) 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, 7004304 + ... + 7004309.

It is an arithmetic number, because the mean of its divisors is an integer number (14008614).

Almost surely, 2^42025839 is an apocalyptic number.

42025839 is a deficient number, since it is larger than the sum of its proper divisors (14008617).

42025839 is a wasteful number, since it uses less digits than its factorization.

42025839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14008616.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 42025839 is about 6482.7339140212. The cubic root of 42025839 is about 347.6739332504.

The spelling of 42025839 in words is "forty-two million, twenty-five thousand, eight hundred thirty-nine".