2021430 has 32 divisors (see below), whose sum is σ = 4967424. Its totient is φ = 526176.

The previous prime is 2021381. The next prime is 2021431. The reversal of 2021430 is 341202.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021431) 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, 507 + ... + 2073.

It is an arithmetic number, because the mean of its divisors is an integer number (155232).

2^2021430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2021430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2483712).

2021430 is an abundant number, since it is smaller than the sum of its proper divisors (2945994).

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

2021430 is a wasteful number, since it uses less digits than its factorization.

2021430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1620.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 2021430 is about 1421.7700235973. The cubic root of 2021430 is about 126.4405090345.

Adding to 2021430 its reverse (341202), we get a palindrome (2362632).

The spelling of 2021430 in words is "two million, twenty-one thousand, four hundred thirty".