2421440421 has 8 divisors (see below), whose sum is σ = 3231396864. Its totient is φ = 1612888800.

The previous prime is 2421440377. The next prime is 2421440429. The reversal of 2421440421 is 1240441242.

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

It is not a de Polignac number, because 2421440421 - 2¹⁷ = 2421309349 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2421440391 and 2421440400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421440429) 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, 347176 + ... + 354081.

It is an arithmetic number, because the mean of its divisors is an integer number (403924608).

Almost surely, 2^2421440421 is an apocalyptic number.

It is an amenable number.

2421440421 is a deficient number, since it is larger than the sum of its proper divisors (809956443).

2421440421 is a wasteful number, since it uses less digits than its factorization.

2421440421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702411.

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 2421440421 is about 49208.1336874302. The cubic root of 2421440421 is about 1342.8410097455.

Adding to 2421440421 its reverse (1240441242), we get a palindrome (3661881663).

The spelling of 2421440421 in words is "two billion, four hundred twenty-one million, four hundred forty thousand, four hundred twenty-one".