143942864 has 40 divisors (see below), whose sum is σ = 302397312. Its totient is φ = 65980800.

The previous prime is 143942857. The next prime is 143942881. The reversal of 143942864 is 468249341.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29117 + ... + 33699.

Almost surely, 2^143942864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 143942864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151198656).

143942864 is an abundant number, since it is smaller than the sum of its proper divisors (158454448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

143942864 is a wasteful number, since it uses less digits than its factorization.

143942864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4755 (or 4749 counting only the distinct ones).

The product of its digits is 165888, while the sum is 41.

The square root of 143942864 is about 11997.6190971376. The cubic root of 143942864 is about 524.0789462080.

The spelling of 143942864 in words is "one hundred forty-three million, nine hundred forty-two thousand, eight hundred sixty-four".