143875681 has 4 divisors (see below), whose sum is σ = 148516864. Its totient is φ = 139234500.

The previous prime is 143875661. The next prime is 143875687. The reversal of 143875681 is 186578341.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 143875681 - 2⁹ = 143875169 is a prime.

It is a super-2 number, since 2×143875681² = 41400423166427522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143875687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2320545 + ... + 2320606.

It is an arithmetic number, because the mean of its divisors is an integer number (37129216).

Almost surely, 2^143875681 is an apocalyptic number.

It is an amenable number.

143875681 is a deficient number, since it is larger than the sum of its proper divisors (4641183).

143875681 is an equidigital number, since it uses as much as digits as its factorization.

143875681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4641182.

The product of its digits is 161280, while the sum is 43.

The square root of 143875681 is about 11994.8189231851. The cubic root of 143875681 is about 523.9973984002.

The spelling of 143875681 in words is "one hundred forty-three million, eight hundred seventy-five thousand, six hundred eighty-one".