212320842 has 16 divisors (see below), whose sum is σ = 434517600. Its totient is φ = 69127632.

The previous prime is 212320831. The next prime is 212320847. The reversal of 212320842 is 248023212.

212320842 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (212320847) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 411217 + ... + 411732.

It is an arithmetic number, because the mean of its divisors is an integer number (27157350).

Almost surely, 2^212320842 is an apocalyptic number.

212320842 is an abundant number, since it is smaller than the sum of its proper divisors (222196758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212320842 is a wasteful number, since it uses less digits than its factorization.

212320842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822997.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 212320842 is about 14571.2333726421. The cubic root of 212320842 is about 596.5738452337.

The spelling of 212320842 in words is "two hundred twelve million, three hundred twenty thousand, eight hundred forty-two".