42112004 has 12 divisors (see below), whose sum is σ = 80395728. Its totient is φ = 19141800.

The previous prime is 42112001. The next prime is 42112061. The reversal of 42112004 is 40021124.

It is a self number, because there is not a number n which added to its sum of digits gives 42112004.

It is not an unprimeable number, because it can be changed into a prime (42112001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 478502 + ... + 478589.

It is an arithmetic number, because the mean of its divisors is an integer number (6699644).

Almost surely, 2^42112004 is an apocalyptic number.

42112004 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

42112004 is a deficient number, since it is larger than the sum of its proper divisors (38283724).

42112004 is a wasteful number, since it uses less digits than its factorization.

42112004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957106 (or 957104 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 42112004 is about 6489.3762412115. The cubic root of 42112004 is about 347.9113814074.

Adding to 42112004 its reverse (40021124), we get a palindrome (82133128).

The spelling of 42112004 in words is "forty-two million, one hundred twelve thousand, four".