2021407924 has 12 divisors (see below), whose sum is σ = 3545869348. Its totient is φ = 1008302400.

The previous prime is 2021407907. The next prime is 2021407957. The reversal of 2021407924 is 4297041202.

It can be written as a sum of positive squares in 2 ways, for example, as 642622500 + 1378785424 = 25350^2 + 37132^2 .

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 3 ways as a sum of consecutive naturals, for example, 598497 + ... + 601864.

Almost surely, 2^2021407924 is an apocalyptic number.

It is an amenable number.

2021407924 is a deficient number, since it is larger than the sum of its proper divisors (1524461424).

2021407924 is a wasteful number, since it uses less digits than its factorization.

2021407924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1200786 (or 1200784 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 2021407924 is about 44960.0703291265. The cubic root of 2021407924 is about 1264.4004874803.

The spelling of 2021407924 in words is "two billion, twenty-one million, four hundred seven thousand, nine hundred twenty-four".