1124240021 has 2 divisors, whose sum is σ = 1124240022. Its totient is φ = 1124240020.

The previous prime is 1124240011. The next prime is 1124240027. The reversal of 1124240021 is 1200424211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 584188900 + 540051121 = 24170^2 + 23239^2 .

It is a cyclic number.

It is not a de Polignac number, because 1124240021 - 2²⁶ = 1057131157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1124240027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562120010 + 562120011.

It is an arithmetic number, because the mean of its divisors is an integer number (562120011).

Almost surely, 2^1124240021 is an apocalyptic number.

It is an amenable number.

1124240021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1124240021 is an equidigital number, since it uses as much as digits as its factorization.

1124240021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1124240021 is about 33529.6886505079. The cubic root of 1124240021 is about 1039.8076632112.

Adding to 1124240021 its reverse (1200424211), we get a palindrome (2324664232).

The spelling of 1124240021 in words is "one billion, one hundred twenty-four million, two hundred forty thousand, twenty-one".