124303561 has 2 divisors, whose sum is σ = 124303562. Its totient is φ = 124303560.

The previous prime is 124303549. The next prime is 124303573. The reversal of 124303561 is 165303421.

It is a balanced prime because it is at equal distance from previous prime (124303549) and next prime (124303573).

It can be written as a sum of positive squares in only one way, i.e., 70560000 + 53743561 = 8400^2 + 7331^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124303561 is a prime.

It is equal to p_7072801 and since 124303561 and 7072801 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (124303511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62151780 + 62151781.

It is an arithmetic number, because the mean of its divisors is an integer number (62151781).

Almost surely, 2^124303561 is an apocalyptic number.

It is an amenable number.

124303561 is a deficient number, since it is larger than the sum of its proper divisors (1).

124303561 is an equidigital number, since it uses as much as digits as its factorization.

124303561 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 25.

The square root of 124303561 is about 11149.1506851419. The cubic root of 124303561 is about 499.0696847674.

Adding to 124303561 its reverse (165303421), we get a palindrome (289606982).

The spelling of 124303561 in words is "one hundred twenty-four million, three hundred three thousand, five hundred sixty-one".