1172242273 has 2 divisors, whose sum is σ = 1172242274. Its totient is φ = 1172242272.

The previous prime is 1172242271. The next prime is 1172242289. The reversal of 1172242273 is 3722422711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 783048289 + 389193984 = 27983^2 + 19728^2 .

It is a cyclic number.

It is not a de Polignac number, because 1172242273 - 2¹ = 1172242271 is a prime.

Together with 1172242271, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1172242271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 586121136 + 586121137.

It is an arithmetic number, because the mean of its divisors is an integer number (586121137).

Almost surely, 2^1172242273 is an apocalyptic number.

It is an amenable number.

1172242273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1172242273 is an equidigital number, since it uses as much as digits as its factorization.

1172242273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9408, while the sum is 31.

The square root of 1172242273 is about 34238.0237893486. The cubic root of 1172242273 is about 1054.4009605835.

Adding to 1172242273 its reverse (3722422711), we get a palindrome (4894664984).

The spelling of 1172242273 in words is "one billion, one hundred seventy-two million, two hundred forty-two thousand, two hundred seventy-three".