342217220 has 48 divisors (see below), whose sum is σ = 737869440. Its totient is φ = 133249536.

The previous prime is 342217219. The next prime is 342217229. The reversal of 342217220 is 22712243.

It is a happy number.

It is a super-2 number, since 2×342217220² = 234225251329056800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (342217229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 371921 + ... + 372839.

It is an arithmetic number, because the mean of its divisors is an integer number (15372280).

Almost surely, 2^342217220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 342217220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (368934720).

342217220 is an abundant number, since it is smaller than the sum of its proper divisors (395652220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

342217220 is a wasteful number, since it uses less digits than its factorization.

342217220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404 (or 1402 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 342217220 is about 18499.1140328395. The cubic root of 342217220 is about 699.4670909987.

Adding to 342217220 its reverse (22712243), we get a palindrome (364929463).

The spelling of 342217220 in words is "three hundred forty-two million, two hundred seventeen thousand, two hundred twenty".