42204513 has 16 divisors (see below), whose sum is σ = 61085696. Its totient is φ = 25764480.

The previous prime is 42204511. The next prime is 42204527. The reversal of 42204513 is 31540224.

It is not a de Polignac number, because 42204513 - 2¹ = 42204511 is a prime.

It is the 6497-th Hogben number.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42204513.

It is not an unprimeable number, because it can be changed into a prime (42204511) by changing a digit.

It is a nontrivial repunit in base 6496.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 693 + ... + 9213.

It is an arithmetic number, because the mean of its divisors is an integer number (3817856).

Almost surely, 2^42204513 is an apocalyptic number.

It is an amenable number.

42204513 is a deficient number, since it is larger than the sum of its proper divisors (18881183).

42204513 is a wasteful number, since it uses less digits than its factorization.

42204513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8664.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 42204513 is about 6496.5000577234. The cubic root of 42204513 is about 348.1659516991.

Adding to 42204513 its reverse (31540224), we get a palindrome (73744737).

The spelling of 42204513 in words is "forty-two million, two hundred four thousand, five hundred thirteen".