42004001 has 8 divisors (see below), whose sum is σ = 45312960. Its totient is φ = 38706192.

The previous prime is 42003979. The next prime is 42004009. The reversal of 42004001 is 10040024.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42004001 is a prime.

It is a super-2 number, since 2×42004001² = 3528672200016002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42004009) 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, 6116 + ... + 11018.

It is an arithmetic number, because the mean of its divisors is an integer number (5664120).

Almost surely, 2^42004001 is an apocalyptic number.

It is an amenable number.

42004001 is a deficient number, since it is larger than the sum of its proper divisors (3308959).

42004001 is a wasteful number, since it uses less digits than its factorization.

42004001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5575.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 42004001 is about 6481.0493749084. The cubic root of 42004001 is about 347.6137019021.

Adding to 42004001 its reverse (10040024), we get a palindrome (52044025).

The spelling of 42004001 in words is "forty-two million, four thousand, one".