212420003 has 2 divisors, whose sum is σ = 212420004. Its totient is φ = 212420002.

The previous prime is 212419993. The next prime is 212420027. The reversal of 212420003 is 300024212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212420003 - 2¹⁴ = 212403619 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212420003.

It is not a weakly prime, because it can be changed into another prime (212426003) 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 as a sum of consecutive naturals, namely, 106210001 + 106210002.

It is an arithmetic number, because the mean of its divisors is an integer number (106210002).

Almost surely, 2^212420003 is an apocalyptic number.

212420003 is a deficient number, since it is larger than the sum of its proper divisors (1).

212420003 is an equidigital number, since it uses as much as digits as its factorization.

212420003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 212420003 is about 14574.6356043642. The cubic root of 212420003 is about 596.6667041534. Note that the first 3 decimals are identical.

Adding to 212420003 its reverse (300024212), we get a palindrome (512444215).

The spelling of 212420003 in words is "two hundred twelve million, four hundred twenty thousand, three".