24243021 has 24 divisors (see below), whose sum is σ = 38750400. Its totient is φ = 14481600.

The previous prime is 24243019. The next prime is 24243049. The reversal of 24243021 is 12034242.

It is not a de Polignac number, because 24243021 - 2¹ = 24243019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 24242985 and 24243003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24243421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5305 + ... + 8753.

It is an arithmetic number, because the mean of its divisors is an integer number (1614600).

Almost surely, 2^24243021 is an apocalyptic number.

It is an amenable number.

24243021 is a deficient number, since it is larger than the sum of its proper divisors (14507379).

24243021 is a wasteful number, since it uses less digits than its factorization.

24243021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3537 (or 3534 counting only the distinct ones).

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

The square root of 24243021 is about 4923.7202398187. The cubic root of 24243021 is about 289.4202488225.

Adding to 24243021 its reverse (12034242), we get a palindrome (36277263).

It can be divided in two parts, 2424 and 3021, that added together give a palindrome (5445).

The spelling of 24243021 in words is "twenty-four million, two hundred forty-three thousand, twenty-one".