1120438723 has 2 divisors, whose sum is σ = 1120438724. Its totient is φ = 1120438722.

The previous prime is 1120438681. The next prime is 1120438729. The reversal of 1120438723 is 3278340211.

It is a strong prime.

It is an emirp because it is prime and its reverse (3278340211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1120438723 is a prime.

It is not a weakly prime, because it can be changed into another prime (1120438729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560219361 + 560219362.

It is an arithmetic number, because the mean of its divisors is an integer number (560219362).

Almost surely, 2^1120438723 is an apocalyptic number.

1120438723 is a deficient number, since it is larger than the sum of its proper divisors (1).

1120438723 is an equidigital number, since it uses as much as digits as its factorization.

1120438723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 1120438723 is about 33472.9550981087. The cubic root of 1120438723 is about 1038.6344018703.

Adding to 1120438723 its reverse (3278340211), we get a palindrome (4398778934).

The spelling of 1120438723 in words is "one billion, one hundred twenty million, four hundred thirty-eight thousand, seven hundred twenty-three".