123487867 has 2 divisors, whose sum is σ = 123487868. Its totient is φ = 123487866.

The previous prime is 123487843. The next prime is 123487877. The reversal of 123487867 is 768784321.

It is a strong prime.

It is an emirp because it is prime and its reverse (768784321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123487867 is a prime.

It is not a weakly prime, because it can be changed into another prime (123487877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61743933 + 61743934.

It is an arithmetic number, because the mean of its divisors is an integer number (61743934).

Almost surely, 2^123487867 is an apocalyptic number.

123487867 is a deficient number, since it is larger than the sum of its proper divisors (1).

123487867 is an equidigital number, since it uses as much as digits as its factorization.

123487867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 451584, while the sum is 46.

The square root of 123487867 is about 11112.5094825606. The cubic root of 123487867 is about 497.9756376420.

The spelling of 123487867 in words is "one hundred twenty-three million, four hundred eighty-seven thousand, eight hundred sixty-seven".