2021423412 has 24 divisors (see below), whose sum is σ = 4721096800. Its totient is φ = 673173216.

The previous prime is 2021423407. The next prime is 2021423431. The reversal of 2021423412 is 2143241202.

It is a super-2 number, since 2×2021423412² = 8172305221163443488, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65962 + ... + 91617.

Almost surely, 2^2021423412 is an apocalyptic number.

It is an amenable number.

2021423412 is an abundant number, since it is smaller than the sum of its proper divisors (2699673388).

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

2021423412 is a wasteful number, since it uses less digits than its factorization.

2021423412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158655 (or 158653 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 2021423412 is about 44960.2425705200. The cubic root of 2021423412 is about 1264.4037167452.

Adding to 2021423412 its reverse (2143241202), we get a palindrome (4164664614).

The spelling of 2021423412 in words is "two billion, twenty-one million, four hundred twenty-three thousand, four hundred twelve".