42040004 has 12 divisors (see below), whose sum is σ = 73693200. Its totient is φ = 20984808.

The previous prime is 42039967. The next prime is 42040007. The reversal of 42040004 is 40004024.

It is not an unprimeable number, because it can be changed into a prime (42040007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6014 + ... + 10965.

It is an arithmetic number, because the mean of its divisors is an integer number (6141100).

Almost surely, 2^42040004 is an apocalyptic number.

It is an amenable number.

42040004 is a deficient number, since it is larger than the sum of its proper divisors (31653196).

42040004 is a wasteful number, since it uses less digits than its factorization.

42040004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17602 (or 17600 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 42040004 is about 6483.8263394388. The cubic root of 42040004 is about 347.7129905556.

Adding to 42040004 its reverse (40004024), we get a palindrome (82044028).

The spelling of 42040004 in words is "forty-two million, forty thousand, four", and thus it is an eban number.