1124072561 has 2 divisors, whose sum is σ = 1124072562. Its totient is φ = 1124072560.

The previous prime is 1124072527. The next prime is 1124072563. The reversal of 1124072561 is 1652704211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 643586161 + 480486400 = 25369^2 + 21920^2 .

It is a cyclic number.

It is not a de Polignac number, because 1124072561 - 2¹⁰ = 1124071537 is a prime.

Together with 1124072563, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1124072563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562036280 + 562036281.

It is an arithmetic number, because the mean of its divisors is an integer number (562036281).

Almost surely, 2^1124072561 is an apocalyptic number.

It is an amenable number.

1124072561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1124072561 is an equidigital number, since it uses as much as digits as its factorization.

1124072561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 1124072561 is about 33527.1913676049. The cubic root of 1124072561 is about 1039.7560328255.

Adding to 1124072561 its reverse (1652704211), we get a palindrome (2776776772).

The spelling of 1124072561 in words is "one billion, one hundred twenty-four million, seventy-two thousand, five hundred sixty-one".