212430242 has 4 divisors (see below), whose sum is σ = 318645366. Its totient is φ = 106215120.

The previous prime is 212430221. The next prime is 212430269. The reversal of 212430242 is 242034212.

212430242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 195132961 + 17297281 = 13969^2 + 4159^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53107559 + ... + 53107562.

Almost surely, 2^212430242 is an apocalyptic number.

212430242 is a deficient number, since it is larger than the sum of its proper divisors (106215124).

212430242 is a wasteful number, since it uses less digits than its factorization.

212430242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106215123.

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

The square root of 212430242 is about 14574.9868610575. The cubic root of 212430242 is about 596.6762907776.

Adding to 212430242 its reverse (242034212), we get a palindrome (454464454).

The spelling of 212430242 in words is "two hundred twelve million, four hundred thirty thousand, two hundred forty-two".