212442366 has 16 divisors (see below), whose sum is σ = 430869888. Its totient is φ = 69816600.

The previous prime is 212442359. The next prime is 212442383. The reversal of 212442366 is 663244212.

212442366 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 248920 + ... + 249771.

It is an arithmetic number, because the mean of its divisors is an integer number (26929368).

Almost surely, 2^212442366 is an apocalyptic number.

212442366 is an abundant number, since it is smaller than the sum of its proper divisors (218427522).

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

212442366 is a wasteful number, since it uses less digits than its factorization.

212442366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498767.

The product of its digits is 13824, while the sum is 30.

The square root of 212442366 is about 14575.4027731655. The cubic root of 212442366 is about 596.6876419011.

Adding to 212442366 its reverse (663244212), we get a palindrome (875686578).

The spelling of 212442366 in words is "two hundred twelve million, four hundred forty-two thousand, three hundred sixty-six".