2021424424 has 8 divisors (see below), whose sum is σ = 3790170810. Its totient is φ = 1010712208.

The previous prime is 2021424407. The next prime is 2021424523. The reversal of 2021424424 is 4244241202.

It can be written as a sum of positive squares in only one way, i.e., 1754101924 + 267322500 = 41882^2 + 16350^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 126339019 + ... + 126339034.

Almost surely, 2^2021424424 is an apocalyptic number.

It is an amenable number.

2021424424 is a deficient number, since it is larger than the sum of its proper divisors (1768746386).

2021424424 is a wasteful number, since it uses less digits than its factorization.

2021424424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252678059 (or 252678055 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 25.

The square root of 2021424424 is about 44960.2538249063. The cubic root of 2021424424 is about 1264.4039277477.

Adding to 2021424424 its reverse (4244241202), we get a palindrome (6265665626).

The spelling of 2021424424 in words is "two billion, twenty-one million, four hundred twenty-four thousand, four hundred twenty-four".