124045561 has 2 divisors, whose sum is σ = 124045562. Its totient is φ = 124045560.

The previous prime is 124045529. The next prime is 124045567. The reversal of 124045561 is 165540421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122766400 + 1279161 = 11080^2 + 1131^2 .

It is a cyclic number.

It is not a de Polignac number, because 124045561 - 2⁵ = 124045529 is a prime.

It is not a weakly prime, because it can be changed into another prime (124045567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62022780 + 62022781.

It is an arithmetic number, because the mean of its divisors is an integer number (62022781).

Almost surely, 2^124045561 is an apocalyptic number.

It is an amenable number.

124045561 is a deficient number, since it is larger than the sum of its proper divisors (1).

124045561 is an equidigital number, since it uses as much as digits as its factorization.

124045561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 124045561 is about 11137.5742870699. The cubic root of 124045561 is about 498.7241619100.

Adding to 124045561 its reverse (165540421), we get a palindrome (289585982).

The spelling of 124045561 in words is "one hundred twenty-four million, forty-five thousand, five hundred sixty-one".