42204215 has 16 divisors (see below), whose sum is σ = 51565248. Its totient is φ = 33156096.

The previous prime is 42204209. The next prime is 42204223. The reversal of 42204215 is 51240224.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 42204215 - 2¹⁰ = 42203191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83654 + ... + 84156.

It is an arithmetic number, because the mean of its divisors is an integer number (3222828).

Almost surely, 2^42204215 is an apocalyptic number.

42204215 is a deficient number, since it is larger than the sum of its proper divisors (9361033).

42204215 is a wasteful number, since it uses less digits than its factorization.

42204215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 42204215 is about 6496.4771222563. The cubic root of 42204215 is about 348.1651322473.

Adding to 42204215 its reverse (51240224), we get a palindrome (93444439).

The spelling of 42204215 in words is "forty-two million, two hundred four thousand, two hundred fifteen".