212542855 has 16 divisors (see below), whose sum is σ = 292633920. Its totient is φ = 145170432.

The previous prime is 212542853. The next prime is 212542859. The reversal of 212542855 is 558245212.

212542855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 212542855 - 2¹ = 212542853 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212542855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212542853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2820 + ... + 20809.

It is an arithmetic number, because the mean of its divisors is an integer number (18289620).

Almost surely, 2^212542855 is an apocalyptic number.

212542855 is a deficient number, since it is larger than the sum of its proper divisors (80091065).

212542855 is a wasteful number, since it uses less digits than its factorization.

212542855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23898.

The product of its digits is 32000, while the sum is 34.

The square root of 212542855 is about 14578.8495773844. The cubic root of 212542855 is about 596.7817083435.

The spelling of 212542855 in words is "two hundred twelve million, five hundred forty-two thousand, eight hundred fifty-five".