2021140 has 24 divisors (see below), whose sum is σ = 4630752. Its totient is φ = 734880.

The previous prime is 2021137. The next prime is 2021143. The reversal of 2021140 is 411202.

It is an interprime number because it is at equal distance from previous prime (2021137) and next prime (2021143).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021143) 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, 4374 + ... + 4813.

It is an arithmetic number, because the mean of its divisors is an integer number (192948).

2^2021140 is an apocalyptic number.

2021140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021140 is an abundant number, since it is smaller than the sum of its proper divisors (2609612).

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

2021140 is a wasteful number, since it uses less digits than its factorization.

2021140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9207 (or 9205 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 2021140 is about 1421.6680343878. The cubic root of 2021140 is about 126.4344622424.

Adding to 2021140 its reverse (411202), we get a palindrome (2432342).

The spelling of 2021140 in words is "two million, twenty-one thousand, one hundred forty".