24120421 has 8 divisors (see below), whose sum is σ = 26015864. Its totient is φ = 22230720.

The previous prime is 24120419. The next prime is 24120427. The reversal of 24120421 is 12402142.

It can be written as a sum of positive squares in 4 ways, for example, as 12321 + 24108100 = 111^2 + 4910^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 24120421 - 2¹ = 24120419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 24120395 and 24120404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24120427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12031 + ... + 13891.

It is an arithmetic number, because the mean of its divisors is an integer number (3251983).

Almost surely, 2^24120421 is an apocalyptic number.

It is an amenable number.

24120421 is a deficient number, since it is larger than the sum of its proper divisors (1895443).

24120421 is a wasteful number, since it uses less digits than its factorization.

24120421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2871.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 24120421 is about 4911.2545240498. The cubic root of 24120421 is about 288.9315459090.

Adding to 24120421 its reverse (12402142), we get a palindrome (36522563).

The spelling of 24120421 in words is "twenty-four million, one hundred twenty thousand, four hundred twenty-one".