212343442 has 8 divisors (see below), whose sum is σ = 320544396. Its totient is φ = 105495312.

The previous prime is 212343433. The next prime is 212343457. The reversal of 212343442 is 244343212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 193237801 + 19105641 = 13901^2 + 4371^2 .

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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 337813 + ... + 338440.

Almost surely, 2^212343442 is an apocalyptic number.

212343442 is a deficient number, since it is larger than the sum of its proper divisors (108200954).

212343442 is a wasteful number, since it uses less digits than its factorization.

212343442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676412.

The product of its digits is 4608, while the sum is 25.

The square root of 212343442 is about 14572.0088525913. The cubic root of 212343442 is about 596.5950114562.

Adding to 212343442 its reverse (244343212), we get a palindrome (456686654).

The spelling of 212343442 in words is "two hundred twelve million, three hundred forty-three thousand, four hundred forty-two".