345305442 has 16 divisors (see below), whose sum is σ = 692264160. Its totient is φ = 114826272.

The previous prime is 345305413. The next prime is 345305453. The reversal of 345305442 is 244503543.

It is an unprimeable number.

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, 66163 + ... + 71190.

It is an arithmetic number, because the mean of its divisors is an integer number (43266510).

Almost surely, 2^345305442 is an apocalyptic number.

345305442 is an abundant number, since it is smaller than the sum of its proper divisors (346958718).

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

345305442 is a wasteful number, since it uses less digits than its factorization.

345305442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137777.

The product of its (nonzero) digits is 28800, while the sum is 30.

The square root of 345305442 is about 18582.3960241945. The cubic root of 345305442 is about 701.5648271644.

Adding to 345305442 its reverse (244503543), we get a palindrome (589808985).

The spelling of 345305442 in words is "three hundred forty-five million, three hundred five thousand, four hundred forty-two".