2140000 has 60 divisors (see below), whose sum is σ = 5313924. Its totient is φ = 848000.

The previous prime is 2139979. The next prime is 2140001. The reversal of 2140000 is 412.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2140001) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 19947 + ... + 20053.

2^2140000 is an apocalyptic number.

2140000 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 2140000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2656962).

2140000 is an abundant number, since it is smaller than the sum of its proper divisors (3173924).

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

2140000 is an equidigital number, since it uses as much as digits as its factorization.

2140000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 2140000 is about 1462.8738838328. The cubic root of 2140000 is about 128.8658742542.

Adding to 2140000 its reverse (412), we get a palindrome (2140412).

The spelling of 2140000 in words is "two million, one hundred forty thousand".