42004331 has 8 divisors (see below), whose sum is σ = 44588880. Its totient is φ = 39432448.

The previous prime is 42004321. The next prime is 42004343. The reversal of 42004331 is 13340024.

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 42004331 - 2¹⁸ = 41742187 is a prime.

It is a super-2 number, since 2×42004331² = 3528727645515122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42004301) 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, 4175 + ... + 10071.

It is an arithmetic number, because the mean of its divisors is an integer number (5573610).

Almost surely, 2^42004331 is an apocalyptic number.

42004331 is a deficient number, since it is larger than the sum of its proper divisors (2584549).

42004331 is a wasteful number, since it uses less digits than its factorization.

42004331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6333.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 42004331 is about 6481.0748336985. The cubic root of 42004331 is about 347.6146122299.

Adding to 42004331 its reverse (13340024), we get a palindrome (55344355).

The spelling of 42004331 in words is "forty-two million, four thousand, three hundred thirty-one".