2021034420 has 72 divisors (see below), whose sum is σ = 6134934624. Its totient is φ = 538550208.

The previous prime is 2021034401. The next prime is 2021034469. The reversal of 2021034420 is 244301202.

2021034420 is a `hidden beast` number, since 2 + 0 + 210 + 34 + 420 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2021034393 and 2021034402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 311247 + ... + 317673.

Almost surely, 2^2021034420 is an apocalyptic number.

2021034420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021034420 is an abundant number, since it is smaller than the sum of its proper divisors (4113900204).

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

2021034420 is a wasteful number, since it uses less digits than its factorization.

2021034420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8189 (or 8184 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2021034420 is about 44955.9164070759. The cubic root of 2021034420 is about 1264.3226064938.

Adding to 2021034420 its reverse (244301202), we get a palindrome (2265335622).

The spelling of 2021034420 in words is "two billion, twenty-one million, thirty-four thousand, four hundred twenty".