212430401 has 4 divisors (see below), whose sum is σ = 215601072. Its totient is φ = 209259732.

The previous prime is 212430397. The next prime is 212430403. The reversal of 212430401 is 104034212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212430401 - 2² = 212430397 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 212430401.

It is not an unprimeable number, because it can be changed into a prime (212430403) 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, 1585235 + ... + 1585368.

It is an arithmetic number, because the mean of its divisors is an integer number (53900268).

Almost surely, 2^212430401 is an apocalyptic number.

It is an amenable number.

212430401 is a deficient number, since it is larger than the sum of its proper divisors (3170671).

212430401 is an equidigital number, since it uses as much as digits as its factorization.

212430401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3170670.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 212430401 is about 14574.9923156069. The cubic root of 212430401 is about 596.6764396445.

Adding to 212430401 its reverse (104034212), we get a palindrome (316464613).

The spelling of 212430401 in words is "two hundred twelve million, four hundred thirty thousand, four hundred one".