143908 has 6 divisors (see below), whose sum is σ = 251846. Its totient is φ = 71952.

The previous prime is 143881. The next prime is 143909. The reversal of 143908 is 809341.

It can be written as a sum of positive squares in only one way, i.e., 142884 + 1024 = 378^2 + 32^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (143909) by changing a digit.

143908 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17985 + ... + 17992.

2¹⁴³⁹⁰⁸ is an apocalyptic number.

It is an amenable number.

143908 is a deficient number, since it is larger than the sum of its proper divisors (107938).

143908 is a wasteful number, since it uses less digits than its factorization.

143908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35981 (or 35979 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 143908 is about 379.3520792087. The cubic root of 143908 is about 52.4036630891.

The spelling of 143908 in words is "one hundred forty-three thousand, nine hundred eight".