213042242 has 32 divisors (see below), whose sum is σ = 372556800. Its totient is φ = 89486928.

The previous prime is 213042241. The next prime is 213042259. The reversal of 213042242 is 242240312.

213042242 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (213042241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160859 + ... + 162177.

It is an arithmetic number, because the mean of its divisors is an integer number (11642400).

Almost surely, 2^213042242 is an apocalyptic number.

213042242 is a deficient number, since it is larger than the sum of its proper divisors (159514558).

213042242 is a wasteful number, since it uses less digits than its factorization.

213042242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1550.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 213042242 is about 14595.9666346563. The cubic root of 213042242 is about 597.2487387372.

Adding to 213042242 its reverse (242240312), we get a palindrome (455282554).

The spelling of 213042242 in words is "two hundred thirteen million, forty-two thousand, two hundred forty-two".