42003924 has 12 divisors (see below), whose sum is σ = 98009184. Its totient is φ = 14001304.

The previous prime is 42003877. The next prime is 42003943. The reversal of 42003924 is 42930024.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 42003894 and 42003903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1750152 + ... + 1750175.

It is an arithmetic number, because the mean of its divisors is an integer number (8167432).

Almost surely, 2^42003924 is an apocalyptic number.

It is an amenable number.

42003924 is an abundant number, since it is smaller than the sum of its proper divisors (56005260).

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

42003924 is a wasteful number, since it uses less digits than its factorization.

42003924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3500334 (or 3500332 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 42003924 is about 6481.0434345096. The cubic root of 42003924 is about 347.6134894917.

Adding to 42003924 its reverse (42930024), we get a palindrome (84933948).

The spelling of 42003924 in words is "forty-two million, three thousand, nine hundred twenty-four".