212304442 has 32 divisors (see below), whose sum is σ = 387993600. Its totient is φ = 85099248.

The previous prime is 212304431. The next prime is 212304451. The reversal of 212304442 is 244403212.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 15963 + ... + 26065.

It is an arithmetic number, because the mean of its divisors is an integer number (12124800).

Almost surely, 2^212304442 is an apocalyptic number.

212304442 is a deficient number, since it is larger than the sum of its proper divisors (175689158).

212304442 is a wasteful number, since it uses less digits than its factorization.

212304442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10210.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 212304442 is about 14570.6706091381. The cubic root of 212304442 is about 596.5584847335.

Adding to 212304442 its reverse (244403212), we get a palindrome (456707654).

The spelling of 212304442 in words is "two hundred twelve million, three hundred four thousand, four hundred forty-two".