124411561 has 2 divisors, whose sum is σ = 124411562. Its totient is φ = 124411560.

The previous prime is 124411541. The next prime is 124411571. The reversal of 124411561 is 165114421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107765161 + 16646400 = 10381^2 + 4080^2 .

It is a cyclic number.

It is not a de Polignac number, because 124411561 - 2⁷ = 124411433 is a prime.

It is not a weakly prime, because it can be changed into another prime (124411541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62205780 + 62205781.

It is an arithmetic number, because the mean of its divisors is an integer number (62205781).

Almost surely, 2^124411561 is an apocalyptic number.

It is an amenable number.

124411561 is a deficient number, since it is larger than the sum of its proper divisors (1).

124411561 is an equidigital number, since it uses as much as digits as its factorization.

124411561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 960, while the sum is 25.

The square root of 124411561 is about 11153.9930518178. The cubic root of 124411561 is about 499.2141802884.

Adding to 124411561 its reverse (165114421), we get a palindrome (289525982).

The spelling of 124411561 in words is "one hundred twenty-four million, four hundred eleven thousand, five hundred sixty-one".