124540289 has 2 divisors, whose sum is σ = 124540290. Its totient is φ = 124540288.

The previous prime is 124540267. The next prime is 124540291. The reversal of 124540289 is 982045421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84787264 + 39753025 = 9208^2 + 6305^2 .

It is a cyclic number.

It is not a de Polignac number, because 124540289 - 2⁸ = 124540033 is a prime.

Together with 124540291, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (124510289) 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, 62270144 + 62270145.

It is an arithmetic number, because the mean of its divisors is an integer number (62270145).

Almost surely, 2^124540289 is an apocalyptic number.

It is an amenable number.

124540289 is a deficient number, since it is larger than the sum of its proper divisors (1).

124540289 is an equidigital number, since it uses as much as digits as its factorization.

124540289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 124540289 is about 11159.7620494346. The cubic root of 124540289 is about 499.3862990505.

The spelling of 124540289 in words is "one hundred twenty-four million, five hundred forty thousand, two hundred eighty-nine".