212455342 has 16 divisors (see below), whose sum is σ = 353548800. Its totient is φ = 94933240.

The previous prime is 212455337. The next prime is 212455361. The reversal of 212455342 is 243554212.

It is a self number, because there is not a number n which added to its sum of digits gives 212455342.

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, 80542 + ... + 83137.

It is an arithmetic number, because the mean of its divisors is an integer number (22096800).

Almost surely, 2^212455342 is an apocalyptic number.

212455342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212455342 is a deficient number, since it is larger than the sum of its proper divisors (141093458).

212455342 is a wasteful number, since it uses less digits than its factorization.

212455342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163751.

The product of its digits is 9600, while the sum is 28.

The square root of 212455342 is about 14575.8478998650. The cubic root of 212455342 is about 596.6997902331.

It can be divided in two parts, 212 and 455342, that added together give a palindrome (455554).

The spelling of 212455342 in words is "two hundred twelve million, four hundred fifty-five thousand, three hundred forty-two".