40042104 has 32 divisors (see below), whose sum is σ = 100386000. Its totient is φ = 13309952.

The previous prime is 40042099. The next prime is 40042109. The reversal of 40042104 is 40124004.

It is an interprime number because it is at equal distance from previous prime (40042099) and next prime (40042109).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40042109) 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, 7192 + ... + 11480.

Almost surely, 2^40042104 is an apocalyptic number.

It is an amenable number.

40042104 is an abundant number, since it is smaller than the sum of its proper divisors (60343896).

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

40042104 is a wasteful number, since it uses less digits than its factorization.

40042104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4687 (or 4683 counting only the distinct ones).

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

The square root of 40042104 is about 6327.8830583379. The cubic root of 40042104 is about 342.1151419699.

Adding to 40042104 its reverse (40124004), we get a palindrome (80166108).

The spelling of 40042104 in words is "forty million, forty-two thousand, one hundred four".