2421220403 has 8 divisors (see below), whose sum is σ = 2768346720. Its totient is φ = 2074403520.

The previous prime is 2421220397. The next prime is 2421220421. The reversal of 2421220403 is 3040221242.

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

It is not a de Polignac number, because 2421220403 - 2¹² = 2421216307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2421222403) 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, 60338 + ... + 92103.

It is an arithmetic number, because the mean of its divisors is an integer number (346043340).

Almost surely, 2^2421220403 is an apocalyptic number.

2421220403 is a deficient number, since it is larger than the sum of its proper divisors (347126317).

2421220403 is a wasteful number, since it uses less digits than its factorization.

2421220403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154717.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 2421220403 is about 49205.8980509451. The cubic root of 2421220403 is about 1342.8003372406.

Adding to 2421220403 its reverse (3040221242), we get a palindrome (5461441645).

The spelling of 2421220403 in words is "two billion, four hundred twenty-one million, two hundred twenty thousand, four hundred three".