143881972 has 24 divisors (see below), whose sum is σ = 271543496. Its totient is φ = 66313728.

The previous prime is 143881961. The next prime is 143881979. The reversal of 143881972 is 279188341.

It can be written as a sum of positive squares in 4 ways, for example, as 1175056 + 142706916 = 1084^2 + 11946^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143881979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47248 + ... + 50200.

Almost surely, 2^143881972 is an apocalyptic number.

It is an amenable number.

143881972 is a deficient number, since it is larger than the sum of its proper divisors (127661524).

143881972 is a wasteful number, since it uses less digits than its factorization.

143881972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3907 (or 3905 counting only the distinct ones).

The product of its digits is 96768, while the sum is 43.

The square root of 143881972 is about 11995.0811585416. The cubic root of 143881972 is about 524.0050355944.

The spelling of 143881972 in words is "one hundred forty-three million, eight hundred eighty-one thousand, nine hundred seventy-two".