143840081 has 12 divisors (see below), whose sum is σ = 180692736. Its totient is φ = 112082520.

The previous prime is 143840063. The next prime is 143840083. The reversal of 143840081 is 180048341.

It is not a de Polignac number, because 143840081 - 2⁶ = 143840017 is a prime.

It is a super-2 number, since 2×143840081² = 41379937804173122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (143840083) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84065 + ... + 85758.

It is an arithmetic number, because the mean of its divisors is an integer number (15057728).

Almost surely, 2^143840081 is an apocalyptic number.

143840081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

143840081 is a deficient number, since it is larger than the sum of its proper divisors (36852655).

143840081 is a wasteful number, since it uses less digits than its factorization.

143840081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169852 (or 169841 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 143840081 is about 11993.3348573280. The cubic root of 143840081 is about 523.9541762562.

The spelling of 143840081 in words is "one hundred forty-three million, eight hundred forty thousand, eighty-one".