1115430143 has 4 divisors (see below), whose sum is σ = 1117948488. Its totient is φ = 1112911800.

The previous prime is 1115430109. The next prime is 1115430187. The reversal of 1115430143 is 3410345111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3410345111 = 2437 ⋅1399403.

It is a cyclic number.

It is not a de Polignac number, because 1115430143 - 2¹² = 1115426047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115430643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1258508 + ... + 1259393.

It is an arithmetic number, because the mean of its divisors is an integer number (279487122).

Almost surely, 2^1115430143 is an apocalyptic number.

1115430143 is a deficient number, since it is larger than the sum of its proper divisors (2518345).

1115430143 is an equidigital number, since it uses as much as digits as its factorization.

1115430143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2518344.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1115430143 is about 33398.0559763589. The cubic root of 1115430143 is about 1037.0844571518.

Adding to 1115430143 its reverse (3410345111), we get a palindrome (4525775254).

The spelling of 1115430143 in words is "one billion, one hundred fifteen million, four hundred thirty thousand, one hundred forty-three".