42042104 has 16 divisors (see below), whose sum is σ = 84892920. Its totient is φ = 19404000.

The previous prime is 42042103. The next prime is 42042109. The reversal of 42042104 is 40124024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42042103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202022 + ... + 202229.

Almost surely, 2^42042104 is an apocalyptic number.

It is an amenable number.

42042104 is an abundant number, since it is smaller than the sum of its proper divisors (42850816).

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

42042104 is a wasteful number, since it uses less digits than its factorization.

42042104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404270 (or 404266 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 42042104 is about 6483.9882788296. The cubic root of 42042104 is about 347.7187801612.

Adding to 42042104 its reverse (40124024), we get a palindrome (82166128).

It can be divided in two parts, 420 and 42104, that added together give a palindrome (42524).

The spelling of 42042104 in words is "forty-two million, forty-two thousand, one hundred four".