342400340 has 24 divisors (see below), whose sum is σ = 729171072. Its totient is φ = 135030560.

The previous prime is 342400319. The next prime is 342400343. The reversal of 342400340 is 43004243.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342400343) 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 7 ways as a sum of consecutive naturals, for example, 119144 + ... + 121983.

It is an arithmetic number, because the mean of its divisors is an integer number (30382128).

Almost surely, 2^342400340 is an apocalyptic number.

It is an amenable number.

342400340 is an abundant number, since it is smaller than the sum of its proper divisors (386770732).

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

342400340 is a wasteful number, since it uses less digits than its factorization.

342400340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241207 (or 241205 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 342400340 is about 18504.0627971265. The cubic root of 342400340 is about 699.5918300696.

Adding to 342400340 its reverse (43004243), we get a palindrome (385404583).

The spelling of 342400340 in words is "three hundred forty-two million, four hundred thousand, three hundred forty".