210140 has 48 divisors (see below), whose sum is σ = 537600. Its totient is φ = 67392.

The previous prime is 210139. The next prime is 210143. The reversal of 210140 is 41012.

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 210140.

It is not an unprimeable number, because it can be changed into a prime (210143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2621 + ... + 2699.

It is an arithmetic number, because the mean of its divisors is an integer number (11200).

2²¹⁰¹⁴⁰ is an apocalyptic number.

210140 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 210140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268800).

210140 is an abundant number, since it is smaller than the sum of its proper divisors (327460).

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

210140 is a wasteful number, since it uses less digits than its factorization.

210140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114 (or 112 counting only the distinct ones).

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

The square root of 210140 is about 458.4102965685. The cubic root of 210140 is about 59.4524253089.

Adding to 210140 its reverse (41012), we get a palindrome (251152).

The spelling of 210140 in words is "two hundred ten thousand, one hundred forty", and thus it is an iban number.