42104205 has 80 divisors (see below), whose sum is σ = 88792704. Its totient is φ = 18817920.

The previous prime is 42104203. The next prime is 42104239. The reversal of 42104205 is 50240124.

It is not a de Polignac number, because 42104205 - 2¹ = 42104203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42104203) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 57552 + ... + 58278.

Almost surely, 2^42104205 is an apocalyptic number.

42104205 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42104205 is an abundant number, since it is smaller than the sum of its proper divisors (46688499).

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

42104205 is a wasteful number, since it uses less digits than its factorization.

42104205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768 (or 759 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 42104205 is about 6488.7753081764. The cubic root of 42104205 is about 347.8899027464.

Adding to 42104205 its reverse (50240124), we get a palindrome (92344329).

The spelling of 42104205 in words is "forty-two million, one hundred four thousand, two hundred five".