202040 has 16 divisors (see below), whose sum is σ = 454680. Its totient is φ = 80800.

The previous prime is 202031. The next prime is 202049. The reversal of 202040 is 40202.

202040 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (202031) and next prime (202049).

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202049) by changing a digit.

202040 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 3 ways as a sum of consecutive naturals, for example, 2486 + ... + 2565.

2²⁰²⁰⁴⁰ is an apocalyptic number.

202040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202040 is an abundant number, since it is smaller than the sum of its proper divisors (252640).

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

202040 is a wasteful number, since it uses less digits than its factorization.

202040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5062 (or 5058 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 8.

The square root of 202040 is about 449.4885982981. The cubic root of 202040 is about 58.6785157426.

Adding to 202040 its reverse (40202), we get a palindrome (242242).

The spelling of 202040 in words is "two hundred two thousand, forty", and thus it is an iban number.