1423440143 has 8 divisors (see below), whose sum is σ = 1427813376. Its totient is φ = 1419075000.

The previous prime is 1423440127. The next prime is 1423440181. The reversal of 1423440143 is 3410443241.

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 1423440143 - 2⁴ = 1423440127 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 (1423440643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 556718 + ... + 559268.

It is an arithmetic number, because the mean of its divisors is an integer number (178476672).

Almost surely, 2^1423440143 is an apocalyptic number.

1423440143 is a deficient number, since it is larger than the sum of its proper divisors (4373233).

1423440143 is an equidigital number, since it uses as much as digits as its factorization.

1423440143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4045.

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

The square root of 1423440143 is about 37728.5057085488. The cubic root of 1423440143 is about 1124.8978061574.

Adding to 1423440143 its reverse (3410443241), we get a palindrome (4833883384).

The spelling of 1423440143 in words is "one billion, four hundred twenty-three million, four hundred forty thousand, one hundred forty-three".