124454789 has 2 divisors, whose sum is σ = 124454790. Its totient is φ = 124454788.

The previous prime is 124454779. The next prime is 124454809. The reversal of 124454789 is 987454421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105226564 + 19228225 = 10258^2 + 4385^2 .

It is a cyclic number.

It is not a de Polignac number, because 124454789 - 2¹⁶ = 124389253 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124454719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62227394 + 62227395.

It is an arithmetic number, because the mean of its divisors is an integer number (62227395).

Almost surely, 2^124454789 is an apocalyptic number.

It is an amenable number.

124454789 is a deficient number, since it is larger than the sum of its proper divisors (1).

124454789 is an equidigital number, since it uses as much as digits as its factorization.

124454789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 44.

The square root of 124454789 is about 11155.9306648975. The cubic root of 124454789 is about 499.2719925247.

The spelling of 124454789 in words is "one hundred twenty-four million, four hundred fifty-four thousand, seven hundred eighty-nine".