1143242423 has 8 divisors (see below), whose sum is σ = 1155586848. Its totient is φ = 1130922144.

The previous prime is 1143242413. The next prime is 1143242473. The reversal of 1143242423 is 3242423411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1143242423 - 2²⁸ = 874806967 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1143242392 and 1143242401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143242413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98861 + ... + 109817.

It is an arithmetic number, because the mean of its divisors is an integer number (144448356).

Almost surely, 2^1143242423 is an apocalyptic number.

1143242423 is a deficient number, since it is larger than the sum of its proper divisors (12344425).

1143242423 is a wasteful number, since it uses less digits than its factorization.

1143242423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12073.

The product of its digits is 4608, while the sum is 26.

The square root of 1143242423 is about 33811.8680791228. The cubic root of 1143242423 is about 1045.6333921016.

Adding to 1143242423 its reverse (3242423411), we get a palindrome (4385665834).

The spelling of 1143242423 in words is "one billion, one hundred forty-three million, two hundred forty-two thousand, four hundred twenty-three".