342443440 has 40 divisors (see below), whose sum is σ = 801096048. Its totient is φ = 136131840.

The previous prime is 342443417. The next prime is 342443471. The reversal of 342443440 is 44344243.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 342443399 and 342443408.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91 + ... + 26170.

Almost surely, 2^342443440 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 342443440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (400548024).

342443440 is an abundant number, since it is smaller than the sum of its proper divisors (458652608).

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

342443440 is a wasteful number, since it uses less digits than its factorization.

342443440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26437 (or 26431 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

The square root of 342443440 is about 18505.2273695840. The cubic root of 342443440 is about 699.6211827885.

Adding to 342443440 its reverse (44344243), we get a palindrome (386787683).

It can be divided in two parts, 3424 and 43440, that added together give a palindrome (46864).

The spelling of 342443440 in words is "three hundred forty-two million, four hundred forty-three thousand, four hundred forty".