1143040345 has 4 divisors (see below), whose sum is σ = 1371648420. Its totient is φ = 914432272.

The previous prime is 1143040333. The next prime is 1143040357. The reversal of 1143040345 is 5430403411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5430403411 = 977 ⋅5558243.

It is an interprime number because it is at equal distance from previous prime (1143040333) and next prime (1143040357).

It can be written as a sum of positive squares in 2 ways, for example, as 729162009 + 413878336 = 27003^2 + 20344^2 .

It is a cyclic number.

It is not a de Polignac number, because 1143040345 - 2²³ = 1134651737 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114304030 + ... + 114304039.

It is an arithmetic number, because the mean of its divisors is an integer number (342912105).

Almost surely, 2^1143040345 is an apocalyptic number.

It is an amenable number.

1143040345 is a deficient number, since it is larger than the sum of its proper divisors (228608075).

1143040345 is an equidigital number, since it uses as much as digits as its factorization.

1143040345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228608074.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1143040345 is about 33808.8796767950. The cubic root of 1143040345 is about 1045.5717802185.

Adding to 1143040345 its reverse (5430403411), we get a palindrome (6573443756).

The spelling of 1143040345 in words is "one billion, one hundred forty-three million, forty thousand, three hundred forty-five".