1143242473 has 2 divisors, whose sum is σ = 1143242474. Its totient is φ = 1143242472.

The previous prime is 1143242413. The next prime is 1143242479. The reversal of 1143242473 is 3742423411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1127146329 + 16096144 = 33573^2 + 4012^2 .

It is a cyclic number.

It is not a de Polignac number, because 1143242473 - 2⁹ = 1143241961 is a prime.

It is a super-3 number, since 3×1143242473³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1143242479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571621236 + 571621237.

It is an arithmetic number, because the mean of its divisors is an integer number (571621237).

Almost surely, 2^1143242473 is an apocalyptic number.

It is an amenable number.

1143242473 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143242473 is an equidigital number, since it uses as much as digits as its factorization.

1143242473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 31.

The square root of 1143242473 is about 33811.8688185081. The cubic root of 1143242473 is about 1045.6334073453.

Adding to 1143242473 its reverse (3742423411), we get a palindrome (4885665884).

The spelling of 1143242473 in words is "one billion, one hundred forty-three million, two hundred forty-two thousand, four hundred seventy-three".