342442221 has 12 divisors (see below), whose sum is σ = 501871776. Its totient is φ = 207540520.

The previous prime is 342442211. The next prime is 342442231. The reversal of 342442221 is 122244243.

It is an interprime number because it is at equal distance from previous prime (342442211) and next prime (342442231).

It is not a de Polignac number, because 342442221 - 2⁶ = 342442157 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 342442191 and 342442200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342442201) 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 11 ways as a sum of consecutive naturals, for example, 471321 + ... + 472046.

It is an arithmetic number, because the mean of its divisors is an integer number (41822648).

Almost surely, 2^342442221 is an apocalyptic number.

It is an amenable number.

342442221 is a deficient number, since it is larger than the sum of its proper divisors (159429555).

342442221 is a wasteful number, since it uses less digits than its factorization.

342442221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943392 (or 943381 counting only the distinct ones).

The product of its digits is 3072, while the sum is 24.

The square root of 342442221 is about 18505.1944329153. The cubic root of 342442221 is about 699.6203526376.

Adding to 342442221 its reverse (122244243), we get a palindrome (464686464).

The spelling of 342442221 in words is "three hundred forty-two million, four hundred forty-two thousand, two hundred twenty-one".