1120343621 has 2 divisors, whose sum is σ = 1120343622. Its totient is φ = 1120343620.

The previous prime is 1120343617. The next prime is 1120343641. The reversal of 1120343621 is 1263430211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 830016100 + 290327521 = 28810^2 + 17039^2 .

It is a cyclic number.

It is not a de Polignac number, because 1120343621 - 2² = 1120343617 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1120343641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560171810 + 560171811.

It is an arithmetic number, because the mean of its divisors is an integer number (560171811).

Almost surely, 2^1120343621 is an apocalyptic number.

It is an amenable number.

1120343621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1120343621 is an equidigital number, since it uses as much as digits as its factorization.

1120343621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1120343621 is about 33471.5344882782. The cubic root of 1120343621 is about 1038.6050148687.

Adding to 1120343621 its reverse (1263430211), we get a palindrome (2383773832).

The spelling of 1120343621 in words is "one billion, one hundred twenty million, three hundred forty-three thousand, six hundred twenty-one".