345504042 has 40 divisors (see below), whose sum is σ = 833742756. Its totient is φ = 106308288.

The previous prime is 345504041. The next prime is 345504043. The reversal of 345504042 is 240405543.

345504042 is a `hidden beast` number, since 34 + 550 + 40 + 42 = 666.

It is an interprime number because it is at equal distance from previous prime (345504041) and next prime (345504043).

It can be written as a sum of positive squares in 2 ways, for example, as 340070481 + 5433561 = 18441^2 + 2331^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 345503997 and 345504015.

It is not an unprimeable number, because it can be changed into a prime (345504041) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 79923 + ... + 84134.

Almost surely, 2^345504042 is an apocalyptic number.

345504042 is an abundant number, since it is smaller than the sum of its proper divisors (488238714).

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

345504042 is a wasteful number, since it uses less digits than its factorization.

345504042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164084 (or 164075 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 345504042 is about 18587.7390233455. The cubic root of 345504042 is about 701.6993014149.

Adding to 345504042 its reverse (240405543), we get a palindrome (585909585).

The spelling of 345504042 in words is "three hundred forty-five million, five hundred four thousand, forty-two".