1143232429 has 4 divisors (see below), whose sum is σ = 1144302940. Its totient is φ = 1142161920.

The previous prime is 1143232379. The next prime is 1143232459. The reversal of 1143232429 is 9242323411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 212372329 + 930860100 = 14573^2 + 30510^2 .

It is a cyclic number.

It is not a de Polignac number, because 1143232429 - 2²⁷ = 1009014701 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1143232429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143232459) 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, 533652 + ... + 535789.

It is an arithmetic number, because the mean of its divisors is an integer number (286075735).

Almost surely, 2^1143232429 is an apocalyptic number.

It is an amenable number.

1143232429 is a deficient number, since it is larger than the sum of its proper divisors (1070511).

1143232429 is a wasteful number, since it uses less digits than its factorization.

1143232429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070510.

The product of its digits is 10368, while the sum is 31.

The square root of 1143232429 is about 33811.7202904555. The cubic root of 1143232429 is about 1045.6303451857.

The spelling of 1143232429 in words is "one billion, one hundred forty-three million, two hundred thirty-two thousand, four hundred twenty-nine".