342043440 has 80 divisors (see below), whose sum is σ = 1082930688. Its totient is φ = 89267968.

The previous prime is 342043433. The next prime is 342043441. The reversal of 342043440 is 44340243.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 342043440.

It is not an unprimeable number, because it can be changed into a prime (342043441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3882 + ... + 26441.

Almost surely, 2^342043440 is an apocalyptic number.

342043440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 342043440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (541465344).

342043440 is an abundant number, since it is smaller than the sum of its proper divisors (740887248).

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

342043440 is a wasteful number, since it uses less digits than its factorization.

342043440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30386 (or 30380 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 342043440 is about 18494.4164547033. The cubic root of 342043440 is about 699.3486730613.

Adding to 342043440 its reverse (44340243), we get a palindrome (386383683).

The spelling of 342043440 in words is "three hundred forty-two million, forty-three thousand, four hundred forty".