124000081 has 2 divisors, whose sum is σ = 124000082. Its totient is φ = 124000080.

The previous prime is 124000067. The next prime is 124000087. The reversal of 124000081 is 180000421.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120450625 + 3549456 = 10975^2 + 1884^2 .

It is an emirp because it is prime and its reverse (180000421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 124000081 - 2⁹ = 123999569 is a prime.

It is a super-2 number, since 2×124000081² = 30752040176013122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (124000087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62000040 + 62000041.

It is an arithmetic number, because the mean of its divisors is an integer number (62000041).

Almost surely, 2^124000081 is an apocalyptic number.

It is an amenable number.

124000081 is a deficient number, since it is larger than the sum of its proper divisors (1).

124000081 is an equidigital number, since it uses as much as digits as its factorization.

124000081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 124000081 is about 11135.5323626668. The cubic root of 124000081 is about 498.6632038037.

The spelling of 124000081 in words is "one hundred twenty-four million, eighty-one", and thus it is an aban number.