24640121 has 12 divisors (see below), whose sum is σ = 27342000. Its totient is φ = 22021560.

The previous prime is 24640087. The next prime is 24640151. The reversal of 24640121 is 12104642.

It is a de Polignac number, because none of the positive numbers 2^k-24640121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 24640093 and 24640102.

It is not an unprimeable number, because it can be changed into a prime (24640151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49130 + ... + 49628.

It is an arithmetic number, because the mean of its divisors is an integer number (2278500).

Almost surely, 2^24640121 is an apocalyptic number.

It is an amenable number.

24640121 is a deficient number, since it is larger than the sum of its proper divisors (2701879).

24640121 is an equidigital number, since it uses as much as digits as its factorization.

24640121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644 (or 577 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 24640121 is about 4963.8816464537. The cubic root of 24640121 is about 290.9919302762.

Adding to 24640121 its reverse (12104642), we get a palindrome (36744763).

The spelling of 24640121 in words is "twenty-four million, six hundred forty thousand, one hundred twenty-one".