2421642253 has 4 divisors (see below), whose sum is σ = 2432217340. Its totient is φ = 2411067168.

The previous prime is 2421642229. The next prime is 2421642287. The reversal of 2421642253 is 3522461242.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1770473929 + 651168324 = 42077^2 + 25518^2 .

It is a cyclic number.

It is not a de Polignac number, because 2421642253 - 2¹⁷ = 2421511181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421622253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5287200 + ... + 5287657.

It is an arithmetic number, because the mean of its divisors is an integer number (608054335).

Almost surely, 2^2421642253 is an apocalyptic number.

It is an amenable number.

2421642253 is a deficient number, since it is larger than the sum of its proper divisors (10575087).

2421642253 is a wasteful number, since it uses less digits than its factorization.

2421642253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10575086.

The product of its digits is 23040, while the sum is 31.

The square root of 2421642253 is about 49210.1844438730. The cubic root of 2421642253 is about 1342.8783182217.

The spelling of 2421642253 in words is "two billion, four hundred twenty-one million, six hundred forty-two thousand, two hundred fifty-three".