4024012561 has 2 divisors, whose sum is σ = 4024012562. Its totient is φ = 4024012560.

The previous prime is 4024012529. The next prime is 4024012579. The reversal of 4024012561 is 1652104204.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3806273025 + 217739536 = 61695^2 + 14756^2 .

It is a cyclic number.

It is not a de Polignac number, because 4024012561 - 2⁵ = 4024012529 is a prime.

It is not a weakly prime, because it can be changed into another prime (4024013561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2012006280 + 2012006281.

It is an arithmetic number, because the mean of its divisors is an integer number (2012006281).

Almost surely, 2^4024012561 is an apocalyptic number.

It is an amenable number.

4024012561 is a deficient number, since it is larger than the sum of its proper divisors (1).

4024012561 is an equidigital number, since it uses as much as digits as its factorization.

4024012561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 4024012561 is about 63435.1051153854. The cubic root of 4024012561 is about 1590.5711805459.

Adding to 4024012561 its reverse (1652104204), we get a palindrome (5676116765).

The spelling of 4024012561 in words is "four billion, twenty-four million, twelve thousand, five hundred sixty-one".