212452427 has 4 divisors (see below), whose sum is σ = 231766296. Its totient is φ = 193138560.

The previous prime is 212452423. The next prime is 212452453. The reversal of 212452427 is 724254212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212452427 - 2² = 212452423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212452427.

It is not an unprimeable number, because it can be changed into a prime (212452421) 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 3 ways as a sum of consecutive naturals, for example, 9656918 + ... + 9656939.

It is an arithmetic number, because the mean of its divisors is an integer number (57941574).

Almost surely, 2^212452427 is an apocalyptic number.

212452427 is a deficient number, since it is larger than the sum of its proper divisors (19313869).

212452427 is a wasteful number, since it uses less digits than its factorization.

212452427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19313868.

The product of its digits is 8960, while the sum is 29.

The square root of 212452427 is about 14575.7479053392. The cubic root of 212452427 is about 596.6970612081.

The spelling of 212452427 in words is "two hundred twelve million, four hundred fifty-two thousand, four hundred twenty-seven".