124747489 has 2 divisors, whose sum is σ = 124747490. Its totient is φ = 124747488.

The previous prime is 124747487. The next prime is 124747499. The reversal of 124747489 is 984747421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122213025 + 2534464 = 11055^2 + 1592^2 .

It is a cyclic number.

It is not a de Polignac number, because 124747489 - 2¹ = 124747487 is a prime.

Together with 124747487, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (124747481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62373744 + 62373745.

It is an arithmetic number, because the mean of its divisors is an integer number (62373745).

Almost surely, 2^124747489 is an apocalyptic number.

It is an amenable number.

124747489 is a deficient number, since it is larger than the sum of its proper divisors (1).

124747489 is an equidigital number, since it uses as much as digits as its factorization.

124747489 is an odious number, because the sum of its binary digits is odd.

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

The square root of 124747489 is about 11169.0415434808. The cubic root of 124747489 is about 499.6630917033.

The spelling of 124747489 in words is "one hundred twenty-four million, seven hundred forty-seven thousand, four hundred eighty-nine".