342123345 has 36 divisors (see below), whose sum is σ = 615849780. Its totient is φ = 182448288.

The previous prime is 342123343. The next prime is 342123371. The reversal of 342123345 is 543321243.

342123345 is a `hidden beast` number, since 3 + 421 + 233 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 259822161 + 82301184 = 16119^2 + 9072^2 .

It is not a de Polignac number, because 342123345 - 2¹ = 342123343 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (342123343) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 27591 + ... + 38019.

Almost surely, 2^342123345 is an apocalyptic number.

It is an amenable number.

342123345 is a deficient number, since it is larger than the sum of its proper divisors (273726435).

342123345 is an frugal number, since it uses more digits than its factorization.

342123345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10458 (or 10437 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 342123345 is about 18496.5765751395. The cubic root of 342123345 is about 699.4031272604.

Adding to 342123345 its reverse (543321243), we get a palindrome (885444588).

The spelling of 342123345 in words is "three hundred forty-two million, one hundred twenty-three thousand, three hundred forty-five".