212726249 has 2 divisors, whose sum is σ = 212726250. Its totient is φ = 212726248.

The previous prime is 212726237. The next prime is 212726279. The reversal of 212726249 is 942627212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196981225 + 15745024 = 14035^2 + 3968^2 .

It is a cyclic number.

It is not a de Polignac number, because 212726249 - 2⁸ = 212725993 is a prime.

It is a super-2 number, since 2×212726249² = 90504914027220002, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212726279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106363124 + 106363125.

It is an arithmetic number, because the mean of its divisors is an integer number (106363125).

Almost surely, 2^212726249 is an apocalyptic number.

It is an amenable number.

212726249 is a deficient number, since it is larger than the sum of its proper divisors (1).

212726249 is an equidigital number, since it uses as much as digits as its factorization.

212726249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 35.

The square root of 212726249 is about 14585.1379492962. The cubic root of 212726249 is about 596.9533046724.

The spelling of 212726249 in words is "two hundred twelve million, seven hundred twenty-six thousand, two hundred forty-nine".