124210561 has 2 divisors, whose sum is σ = 124210562. Its totient is φ = 124210560.

The previous prime is 124210553. The next prime is 124210571. The reversal of 124210561 is 165012421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113550336 + 10660225 = 10656^2 + 3265^2 .

It is a cyclic number.

It is not a de Polignac number, because 124210561 - 2³ = 124210553 is a prime.

It is a super-3 number, since 3×124210561³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (124210501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62105280 + 62105281.

It is an arithmetic number, because the mean of its divisors is an integer number (62105281).

Almost surely, 2^124210561 is an apocalyptic number.

It is an amenable number.

124210561 is a deficient number, since it is larger than the sum of its proper divisors (1).

124210561 is an equidigital number, since it uses as much as digits as its factorization.

124210561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 124210561 is about 11144.9791834709. The cubic root of 124210561 is about 498.9451909874.

Adding to 124210561 its reverse (165012421), we get a palindrome (289222982).

The spelling of 124210561 in words is "one hundred twenty-four million, two hundred ten thousand, five hundred sixty-one".