143940 has 24 divisors (see below), whose sum is σ = 403200. Its totient is φ = 38368.

The previous prime is 143909. The next prime is 143947. The reversal of 143940 is 49341.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 143940.

It is not an unprimeable number, because it can be changed into a prime (143947) by changing a digit.

143940 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 in 7 ways as a sum of consecutive naturals, for example, 1140 + ... + 1259.

It is an arithmetic number, because the mean of its divisors is an integer number (16800).

2¹⁴³⁹⁴⁰ is an apocalyptic number.

143940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

143940 is an abundant number, since it is smaller than the sum of its proper divisors (259260).

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

143940 is a wasteful number, since it uses less digits than its factorization.

143940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2411 (or 2409 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 143940 is about 379.3942540419. The cubic root of 143940 is about 52.4075470356.

The spelling of 143940 in words is "one hundred forty-three thousand, nine hundred forty".