42001104 has 40 divisors (see below), whose sum is σ = 108743040. Its totient is φ = 13969408.

The previous prime is 42001093. The next prime is 42001109. The reversal of 42001104 is 40110024.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 42001104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42001109) 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, 33904 + ... + 35120.

It is an arithmetic number, because the mean of its divisors is an integer number (2718576).

Almost surely, 2^42001104 is an apocalyptic number.

It is an amenable number.

42001104 is an abundant number, since it is smaller than the sum of its proper divisors (66741936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42001104 is a wasteful number, since it uses less digits than its factorization.

42001104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1947 (or 1941 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 42001104 is about 6480.8258732973. The cubic root of 42001104 is about 347.6057101234.

Adding to 42001104 its reverse (40110024), we get a palindrome (82111128).

The spelling of 42001104 in words is "forty-two million, one thousand, one hundred four".