1140143243 has 2 divisors, whose sum is σ = 1140143244. Its totient is φ = 1140143242.

The previous prime is 1140143201. The next prime is 1140143269. The reversal of 1140143243 is 3423410411.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1140143243 - 2⁸ = 1140142987 is a prime.

It is a super-2 number, since 2×1140143243² = 2599853229117114098, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1140143843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570071621 + 570071622.

It is an arithmetic number, because the mean of its divisors is an integer number (570071622).

Almost surely, 2^1140143243 is an apocalyptic number.

1140143243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1140143243 is an equidigital number, since it uses as much as digits as its factorization.

1140143243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1140143243 is about 33766.0072113953. The cubic root of 1140143243 is about 1044.6876787706.

Adding to 1140143243 its reverse (3423410411), we get a palindrome (4563553654).

The spelling of 1140143243 in words is "one billion, one hundred forty million, one hundred forty-three thousand, two hundred forty-three".