345405401242 has 32 divisors (see below), whose sum is σ = 566768404800. Its totient is φ = 156569642880.

The previous prime is 345405401203. The next prime is 345405401261. The reversal of 345405401242 is 242104504543.

It is a junction number, because it is equal to n+sod(n) for n = 345405401198 and 345405401207.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19586433 + ... + 19604059.

It is an arithmetic number, because the mean of its divisors is an integer number (17711512650).

Almost surely, 2^345405401242 is an apocalyptic number.

345405401242 is a deficient number, since it is larger than the sum of its proper divisors (221363003558).

345405401242 is a wasteful number, since it uses less digits than its factorization.

345405401242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20046.

The product of its (nonzero) digits is 76800, while the sum is 34.

Adding to 345405401242 its reverse (242104504543), we get a palindrome (587509905785).

It can be divided in two parts, 345405 and 401242, that added together give a palindrome (746647).

The spelling of 345405401242 in words is "three hundred forty-five billion, four hundred five million, four hundred one thousand, two hundred forty-two".