143999423 has 16 divisors (see below), whose sum is σ = 154206720. Its totient is φ = 134078976.

The previous prime is 143999417. The next prime is 143999441. The reversal of 143999423 is 324999341.

143999423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 143999423 - 2¹⁶ = 143933887 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 (143999623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 392186 + ... + 392552.

It is an arithmetic number, because the mean of its divisors is an integer number (9637920).

Almost surely, 2^143999423 is an apocalyptic number.

143999423 is a deficient number, since it is larger than the sum of its proper divisors (10207297).

143999423 is a wasteful number, since it uses less digits than its factorization.

With its successor (143999424) it forms an eRAP, since the sums of their prime factors are consecutive (686 and 687).

143999423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686.

The product of its digits is 209952, while the sum is 44.

The square root of 143999423 is about 11999.9759583092. The cubic root of 143999423 is about 524.1475787632.

The spelling of 143999423 in words is "one hundred forty-three million, nine hundred ninety-nine thousand, four hundred twenty-three".