42204243 has 4 divisors (see below), whose sum is σ = 56272328. Its totient is φ = 28136160.

The previous prime is 42204229. The next prime is 42204247. The reversal of 42204243 is 34240224.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 42204243 - 2⁶ = 42204179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42204247) 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, 7034038 + ... + 7034043.

It is an arithmetic number, because the mean of its divisors is an integer number (14068082).

Almost surely, 2^42204243 is an apocalyptic number.

42204243 is a deficient number, since it is larger than the sum of its proper divisors (14068085).

42204243 is a wasteful number, since it uses less digits than its factorization.

42204243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14068084.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 42204243 is about 6496.4792772701. The cubic root of 42204243 is about 348.1652092429.

Adding to 42204243 its reverse (34240224), we get a palindrome (76444467).

The spelling of 42204243 in words is "forty-two million, two hundred four thousand, two hundred forty-three".