124910561 has 2 divisors, whose sum is σ = 124910562. Its totient is φ = 124910560.

The previous prime is 124910549. The next prime is 124910567. The reversal of 124910561 is 165019421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73702225 + 51208336 = 8585^2 + 7156^2 .

It is a cyclic number.

It is not a de Polignac number, because 124910561 - 2⁶ = 124910497 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (124910567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62455280 + 62455281.

It is an arithmetic number, because the mean of its divisors is an integer number (62455281).

Almost surely, 2^124910561 is an apocalyptic number.

It is an amenable number.

124910561 is a deficient number, since it is larger than the sum of its proper divisors (1).

124910561 is an equidigital number, since it uses as much as digits as its factorization.

124910561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 124910561 is about 11176.3393380838. The cubic root of 124910561 is about 499.8807195466.

Adding to 124910561 its reverse (165019421), we get a palindrome (289929982).

The spelling of 124910561 in words is "one hundred twenty-four million, nine hundred ten thousand, five hundred sixty-one".