2242402421 has 4 divisors (see below), whose sum is σ = 2562745632. Its totient is φ = 1922059212.

The previous prime is 2242402417. The next prime is 2242402423. The reversal of 2242402421 is 1242042422.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1242042422 = 2 ⋅621021211.

It is a cyclic number.

It is not a de Polignac number, because 2242402421 - 2² = 2242402417 is a prime.

It is a super-2 number, since 2×2242402421² = 10056737235413322482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2242402423) 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, 160171595 + ... + 160171608.

It is an arithmetic number, because the mean of its divisors is an integer number (640686408).

Almost surely, 2^2242402421 is an apocalyptic number.

It is an amenable number.

2242402421 is a deficient number, since it is larger than the sum of its proper divisors (320343211).

2242402421 is an equidigital number, since it uses as much as digits as its factorization.

2242402421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320343210.

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 2242402421 is about 47354.0116674395. The cubic root of 2242402421 is about 1308.8941235182.

Adding to 2242402421 its reverse (1242042422), we get a palindrome (3484444843).

The spelling of 2242402421 in words is "two billion, two hundred forty-two million, four hundred two thousand, four hundred twenty-one".