1259143423 has 4 divisors (see below), whose sum is σ = 1267594200. Its totient is φ = 1250692648.

The previous prime is 1259143421. The next prime is 1259143429. The reversal of 1259143423 is 3243419521.

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

It is a cyclic number.

It is not a de Polignac number, because 1259143423 - 2¹ = 1259143421 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 (1259143421) 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, 4225165 + ... + 4225462.

It is an arithmetic number, because the mean of its divisors is an integer number (316898550).

Almost surely, 2^1259143423 is an apocalyptic number.

1259143423 is a deficient number, since it is larger than the sum of its proper divisors (8450777).

1259143423 is an equidigital number, since it uses as much as digits as its factorization.

1259143423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8450776.

The product of its digits is 25920, while the sum is 34.

The square root of 1259143423 is about 35484.4109856709. The cubic root of 1259143423 is about 1079.8374878359.

The spelling of 1259143423 in words is "one billion, two hundred fifty-nine million, one hundred forty-three thousand, four hundred twenty-three".