24242640121 has 4 divisors (see below), whose sum is σ = 27705874432. Its totient is φ = 20779405812.

The previous prime is 24242640041. The next prime is 24242640127. The reversal of 24242640121 is 12104624242.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 24242640121 - 2¹⁵ = 24242607353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 24242640121.

It is not an unprimeable number, because it can be changed into a prime (24242640127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1731617145 + ... + 1731617158.

It is an arithmetic number, because the mean of its divisors is an integer number (6926468608).

Almost surely, 2^24242640121 is an apocalyptic number.

It is an amenable number.

24242640121 is a deficient number, since it is larger than the sum of its proper divisors (3463234311).

24242640121 is an equidigital number, since it uses as much as digits as its factorization.

24242640121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3463234310.

The product of its (nonzero) digits is 6144, while the sum is 28.

The spelling of 24242640121 in words is "twenty-four billion, two hundred forty-two million, six hundred forty thousand, one hundred twenty-one".