42044839 has 8 divisors (see below), whose sum is σ = 43262240. Its totient is φ = 40831776.

The previous prime is 42044833. The next prime is 42044869. The reversal of 42044839 is 93844024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42044839 - 2¹³ = 42036647 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 (42044833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38797 + ... + 39865.

It is an arithmetic number, because the mean of its divisors is an integer number (5407780).

Almost surely, 2^42044839 is an apocalyptic number.

42044839 is a deficient number, since it is larger than the sum of its proper divisors (1217401).

42044839 is a wasteful number, since it uses less digits than its factorization.

42044839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2169.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 42044839 is about 6484.1991795441. The cubic root of 42044839 is about 347.7263201441.

The spelling of 42044839 in words is "forty-two million, forty-four thousand, eight hundred thirty-nine".