342444221 has 4 divisors (see below), whose sum is σ = 391364832. Its totient is φ = 293523612.

The previous prime is 342444211. The next prime is 342444227. The reversal of 342444221 is 122444243.

It is a happy number.

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 342444221 - 2¹⁰ = 342443197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342444227) 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, 24460295 + ... + 24460308.

It is an arithmetic number, because the mean of its divisors is an integer number (97841208).

Almost surely, 2^342444221 is an apocalyptic number.

It is an amenable number.

342444221 is a deficient number, since it is larger than the sum of its proper divisors (48920611).

342444221 is an equidigital number, since it uses as much as digits as its factorization.

342444221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48920610.

The product of its digits is 6144, while the sum is 26.

The square root of 342444221 is about 18505.2484717174. The cubic root of 342444221 is about 699.6217146562.

Adding to 342444221 its reverse (122444243), we get a palindrome (464888464).

The spelling of 342444221 in words is "three hundred forty-two million, four hundred forty-four thousand, two hundred twenty-one".