12458861 has 2 divisors, whose sum is σ = 12458862. Its totient is φ = 12458860.

The previous prime is 12458857. The next prime is 12458879. The reversal of 12458861 is 16885421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7645225 + 4813636 = 2765^2 + 2194^2 .

It is a cyclic number.

It is not a de Polignac number, because 12458861 - 2² = 12458857 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12458821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6229430 + 6229431.

It is an arithmetic number, because the mean of its divisors is an integer number (6229431).

Almost surely, 2^12458861 is an apocalyptic number.

It is an amenable number.

12458861 is a deficient number, since it is larger than the sum of its proper divisors (1).

12458861 is an equidigital number, since it uses as much as digits as its factorization.

12458861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15360, while the sum is 35.

The square root of 12458861 is about 3529.7111779861. The cubic root of 12458861 is about 231.8245614313.

It can be divided in two parts, 124 and 58861, that added together give a palindrome (58985).

The spelling of 12458861 in words is "twelve million, four hundred fifty-eight thousand, eight hundred sixty-one".