213342242 has 8 divisors (see below), whose sum is σ = 320820636. Its totient is φ = 106402032.

The previous prime is 213342211. The next prime is 213342251. The reversal of 213342242 is 242243312.

It can be written as a sum of positive squares in 2 ways, for example, as 202179961 + 11162281 = 14219^2 + 3341^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133553 + ... + 135140.

Almost surely, 2^213342242 is an apocalyptic number.

213342242 is a deficient number, since it is larger than the sum of its proper divisors (107478394).

213342242 is a wasteful number, since it uses less digits than its factorization.

213342242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269092.

The product of its digits is 2304, while the sum is 23.

The square root of 213342242 is about 14606.2398309763. The cubic root of 213342242 is about 597.5289501212.

Adding to 213342242 its reverse (242243312), we get a palindrome (455585554).

The spelling of 213342242 in words is "two hundred thirteen million, three hundred forty-two thousand, two hundred forty-two".