42404001 has 16 divisors (see below), whose sum is σ = 61797888. Its totient is φ = 25747200.

The previous prime is 42403981. The next prime is 42404017. The reversal of 42404001 is 10040424.

It is not a de Polignac number, because 42404001 - 2⁶ = 42403937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42402001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11830 + ... + 14991.

It is an arithmetic number, because the mean of its divisors is an integer number (3862368).

Almost surely, 2^42404001 is an apocalyptic number.

It is an amenable number.

42404001 is a deficient number, since it is larger than the sum of its proper divisors (19393887).

42404001 is a wasteful number, since it uses less digits than its factorization.

42404001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26872.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 42404001 is about 6511.8354555379. The cubic root of 42404001 is about 348.7136481425.

Adding to 42404001 its reverse (10040424), we get a palindrome (52444425).

The spelling of 42404001 in words is "forty-two million, four hundred four thousand, one".