211424242 has 8 divisors (see below), whose sum is σ = 317204316. Its totient is φ = 105689472.

The previous prime is 211424219. The next prime is 211424263. The reversal of 211424242 is 242424112.

211424242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 205377561 + 6046681 = 14331^2 + 2459^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5118 + ... + 21190.

Almost surely, 2^211424242 is an apocalyptic number.

211424242 is a deficient number, since it is larger than the sum of its proper divisors (105780074).

211424242 is a wasteful number, since it uses less digits than its factorization.

211424242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22652.

The product of its digits is 1024, while the sum is 22.

The square root of 211424242 is about 14540.4347252756. The cubic root of 211424242 is about 595.7329122473.

Adding to 211424242 its reverse (242424112), we get a palindrome (453848354).

The spelling of 211424242 in words is "two hundred eleven million, four hundred twenty-four thousand, two hundred forty-two".