12401261 has 2 divisors, whose sum is σ = 12401262. Its totient is φ = 12401260.

The previous prime is 12401251. The next prime is 12401267. The reversal of 12401261 is 16210421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12145225 + 256036 = 3485^2 + 506^2 .

It is a cyclic number.

It is not a de Polignac number, because 12401261 - 2¹⁰ = 12400237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12401267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6200630 + 6200631.

It is an arithmetic number, because the mean of its divisors is an integer number (6200631).

Almost surely, 2^12401261 is an apocalyptic number.

It is an amenable number.

12401261 is a deficient number, since it is larger than the sum of its proper divisors (1).

12401261 is an equidigital number, since it uses as much as digits as its factorization.

12401261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 12401261 is about 3521.5424177482. The cubic root of 12401261 is about 231.4667511458.

Adding to 12401261 its reverse (16210421), we get a palindrome (28611682).

The spelling of 12401261 in words is "twelve million, four hundred one thousand, two hundred sixty-one".