124566889 has 2 divisors, whose sum is σ = 124566890. Its totient is φ = 124566888.

The previous prime is 124566887. The next prime is 124566913. The reversal of 124566889 is 988665421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96825600 + 27741289 = 9840^2 + 5267^2 .

It is an emirp because it is prime and its reverse (988665421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 124566889 - 2¹ = 124566887 is a prime.

Together with 124566887, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (124566887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62283444 + 62283445.

It is an arithmetic number, because the mean of its divisors is an integer number (62283445).

Almost surely, 2^124566889 is an apocalyptic number.

It is an amenable number.

124566889 is a deficient number, since it is larger than the sum of its proper divisors (1).

124566889 is an equidigital number, since it uses as much as digits as its factorization.

124566889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 829440, while the sum is 49.

The square root of 124566889 is about 11160.9537674878. The cubic root of 124566889 is about 499.4218504104.

The spelling of 124566889 in words is "one hundred twenty-four million, five hundred sixty-six thousand, eight hundred eighty-nine".