201940 has 24 divisors (see below), whose sum is σ = 443520. Its totient is φ = 77088.

The previous prime is 201937. The next prime is 201947. The reversal of 201940 is 49102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201947) 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, 241 + ... + 679.

It is an arithmetic number, because the mean of its divisors is an integer number (18480).

2²⁰¹⁹⁴⁰ is an apocalyptic number.

201940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221760).

201940 is an abundant number, since it is smaller than the sum of its proper divisors (241580).

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

201940 is a wasteful number, since it uses less digits than its factorization.

201940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471 (or 469 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 201940 is about 449.3773470036. The cubic root of 201940 is about 58.6688331385.

The spelling of 201940 in words is "two hundred one thousand, nine hundred forty".