12942481 has 2 divisors, whose sum is σ = 12942482. Its totient is φ = 12942480.

The previous prime is 12942473. The next prime is 12942487. The reversal of 12942481 is 18424921.

12942481 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12531600 + 410881 = 3540^2 + 641^2 .

It is a cyclic number.

It is not a de Polignac number, because 12942481 - 2³ = 12942473 is a prime.

It is a super-2 number, since 2×12942481² = 335015628870722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12942487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6471240 + 6471241.

It is an arithmetic number, because the mean of its divisors is an integer number (6471241).

Almost surely, 2^12942481 is an apocalyptic number.

It is an amenable number.

12942481 is a deficient number, since it is larger than the sum of its proper divisors (1).

12942481 is an equidigital number, since it uses as much as digits as its factorization.

12942481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 31.

The square root of 12942481 is about 3597.5659827166. The cubic root of 12942481 is about 234.7861703636.

The spelling of 12942481 in words is "twelve million, nine hundred forty-two thousand, four hundred eighty-one".