412138261 has 2 divisors, whose sum is σ = 412138262. Its totient is φ = 412138260.

The previous prime is 412138231. The next prime is 412138271. The reversal of 412138261 is 162831214.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 324360100 + 87778161 = 18010^2 + 9369^2 .

It is a cyclic number.

It is not a de Polignac number, because 412138261 - 2¹¹ = 412136213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (412138201) 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, 206069130 + 206069131.

It is an arithmetic number, because the mean of its divisors is an integer number (206069131).

Almost surely, 2^412138261 is an apocalyptic number.

It is an amenable number.

412138261 is a deficient number, since it is larger than the sum of its proper divisors (1).

412138261 is an equidigital number, since it uses as much as digits as its factorization.

412138261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 28.

The square root of 412138261 is about 20301.1886597805. The cubic root of 412138261 is about 744.1851132296.

Adding to 412138261 its reverse (162831214), we get a palindrome (574969475).

The spelling of 412138261 in words is "four hundred twelve million, one hundred thirty-eight thousand, two hundred sixty-one".