143476873 has 6 divisors (see below), whose sum is σ = 144247886. Its totient is φ = 142709952.

The previous prime is 143476831. The next prime is 143476903. The reversal of 143476873 is 378674341.

It can be written as a sum of positive squares in 3 ways, for example, as 73051209 + 70425664 = 8547^2 + 8392^2 .

It is not a de Polignac number, because 143476873 - 2¹³ = 143468681 is a prime.

It is a super-2 number, since 2×143476873² = 41171226171716258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143476813) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36961 + ... + 40657.

Almost surely, 2^143476873 is an apocalyptic number.

It is an amenable number.

143476873 is a deficient number, since it is larger than the sum of its proper divisors (771013).

143476873 is an frugal number, since it uses more digits than its factorization.

143476873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4091 (or 3894 counting only the distinct ones).

The product of its digits is 338688, while the sum is 43.

The square root of 143476873 is about 11978.1832094855. The cubic root of 143476873 is about 523.5127954528.

The spelling of 143476873 in words is "one hundred forty-three million, four hundred seventy-six thousand, eight hundred seventy-three".