2021420024 has 32 divisors (see below), whose sum is σ = 4176646320. Its totient is φ = 911264256.

The previous prime is 2021420017. The next prime is 2021420029. The reversal of 2021420024 is 4200241202.

It is a happy number.

It is a super-2 number, since 2×2021420024² = 8172277826856321152, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2021419984 and 2021420011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021420029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221537 + ... + 230480.

Almost surely, 2^2021420024 is an apocalyptic number.

It is an amenable number.

2021420024 is an abundant number, since it is smaller than the sum of its proper divisors (2155226296).

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

2021420024 is a wasteful number, since it uses less digits than its factorization.

2021420024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452079 (or 452075 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 2021420024 is about 44960.2048927716. The cubic root of 2021420024 is about 1264.4030103449.

Adding to 2021420024 its reverse (4200241202), we get a palindrome (6221661226).

The spelling of 2021420024 in words is "two billion, twenty-one million, four hundred twenty thousand, twenty-four".