4123321261 has 2 divisors, whose sum is σ = 4123321262. Its totient is φ = 4123321260.

The previous prime is 4123321249. The next prime is 4123321417. The reversal of 4123321261 is 1621233214.

4123321261 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4076822500 + 46498761 = 63850^2 + 6819^2 .

It is a cyclic number.

It is not a de Polignac number, because 4123321261 - 2⁵ = 4123321229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4123321201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2061660630 + 2061660631.

It is an arithmetic number, because the mean of its divisors is an integer number (2061660631).

Almost surely, 2^4123321261 is an apocalyptic number.

It is an amenable number.

4123321261 is a deficient number, since it is larger than the sum of its proper divisors (1).

4123321261 is an equidigital number, since it uses as much as digits as its factorization.

4123321261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 25.

The square root of 4123321261 is about 64213.0925980053. The cubic root of 4123321261 is about 1603.5495753578.

Adding to 4123321261 its reverse (1621233214), we get a palindrome (5744554475).

The spelling of 4123321261 in words is "four billion, one hundred twenty-three million, three hundred twenty-one thousand, two hundred sixty-one".