342221440 has 64 divisors (see below), whose sum is σ = 892516320. Its totient is φ = 124441600.

The previous prime is 342221423. The next prime is 342221459. The reversal of 342221440 is 44122243.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 17266 + ... + 31345.

Almost surely, 2^342221440 is an apocalyptic number.

It is an amenable number.

342221440 is an abundant number, since it is smaller than the sum of its proper divisors (550294880).

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

342221440 is a wasteful number, since it uses less digits than its factorization.

342221440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48641 (or 48629 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 342221440 is about 18499.2280920043. The cubic root of 342221440 is about 699.4699661112.

Adding to 342221440 its reverse (44122243), we get a palindrome (386343683).

The spelling of 342221440 in words is "three hundred forty-two million, two hundred twenty-one thousand, four hundred forty".