212322142 has 8 divisors (see below), whose sum is σ = 318695832. Its totient is φ = 106090200.

The previous prime is 212322127. The next prime is 212322167. The reversal of 212322142 is 241223212.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31609 + ... + 37732.

It is an arithmetic number, because the mean of its divisors is an integer number (39836979).

Almost surely, 2^212322142 is an apocalyptic number.

212322142 is a deficient number, since it is larger than the sum of its proper divisors (106373690).

212322142 is a wasteful number, since it uses less digits than its factorization.

212322142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70874.

The product of its digits is 384, while the sum is 19.

The square root of 212322142 is about 14571.2779810146. The cubic root of 212322142 is about 596.5750628005.

Adding to 212322142 its reverse (241223212), we get a palindrome (453545354).

The spelling of 212322142 in words is "two hundred twelve million, three hundred twenty-two thousand, one hundred forty-two".