212420141 has 2 divisors, whose sum is σ = 212420142. Its totient is φ = 212420140.

The previous prime is 212420081. The next prime is 212420149. The reversal of 212420141 is 141024212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141372100 + 71048041 = 11890^2 + 8429^2 .

It is a cyclic number.

It is not a de Polignac number, because 212420141 - 2¹⁰ = 212419117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212420149) 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, 106210070 + 106210071.

It is an arithmetic number, because the mean of its divisors is an integer number (106210071).

Almost surely, 2^212420141 is an apocalyptic number.

It is an amenable number.

212420141 is a deficient number, since it is larger than the sum of its proper divisors (1).

212420141 is an equidigital number, since it uses as much as digits as its factorization.

212420141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 212420141 is about 14574.6403386156. The cubic root of 212420141 is about 596.6668333628. Note that the first 3 decimals are identical.

Adding to 212420141 its reverse (141024212), we get a palindrome (353444353).

The spelling of 212420141 in words is "two hundred twelve million, four hundred twenty thousand, one hundred forty-one".