212742293 has 2 divisors, whose sum is σ = 212742294. Its totient is φ = 212742292.

The previous prime is 212742269. The next prime is 212742311. The reversal of 212742293 is 392247212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 172318129 + 40424164 = 13127^2 + 6358^2 .

It is a cyclic number.

It is not a de Polignac number, because 212742293 - 2²⁶ = 145633429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212742493) 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, 106371146 + 106371147.

It is an arithmetic number, because the mean of its divisors is an integer number (106371147).

Almost surely, 2^212742293 is an apocalyptic number.

It is an amenable number.

212742293 is a deficient number, since it is larger than the sum of its proper divisors (1).

212742293 is an equidigital number, since it uses as much as digits as its factorization.

212742293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 32.

The square root of 212742293 is about 14585.6879508647. The cubic root of 212742293 is about 596.9683118754.

The spelling of 212742293 in words is "two hundred twelve million, seven hundred forty-two thousand, two hundred ninety-three".