124443212989 has 2 divisors, whose sum is σ = 124443212990. Its totient is φ = 124443212988.

The previous prime is 124443212981. The next prime is 124443213031. The reversal of 124443212989 is 989212344421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117272002500 + 7171210489 = 342450^2 + 84683^2 .

It is a cyclic number.

It is not a de Polignac number, because 124443212989 - 2³ = 124443212981 is a prime.

It is a super-2 number, since 2×124443212989² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124443212981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62221606494 + 62221606495.

It is an arithmetic number, because the mean of its divisors is an integer number (62221606495).

Almost surely, 2^124443212989 is an apocalyptic number.

It is an amenable number.

124443212989 is a deficient number, since it is larger than the sum of its proper divisors (1).

124443212989 is an equidigital number, since it uses as much as digits as its factorization.

124443212989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 995328, while the sum is 49.

The spelling of 124443212989 in words is "one hundred twenty-four billion, four hundred forty-three million, two hundred twelve thousand, nine hundred eighty-nine".