345425422 has 4 divisors (see below), whose sum is σ = 518138136. Its totient is φ = 172712710.

The previous prime is 345425411. The next prime is 345425441. The reversal of 345425422 is 224524543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 224524543 = 43 ⋅5221501.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 86356354 + ... + 86356357.

It is an arithmetic number, because the mean of its divisors is an integer number (129534534).

Almost surely, 2^345425422 is an apocalyptic number.

345425422 is a deficient number, since it is larger than the sum of its proper divisors (172712714).

345425422 is a wasteful number, since it uses less digits than its factorization.

345425422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172712713.

The product of its digits is 38400, while the sum is 31.

The square root of 345425422 is about 18585.6240680801. The cubic root of 345425422 is about 701.6460731094.

Adding to 345425422 its reverse (224524543), we get a palindrome (569949965).

The spelling of 345425422 in words is "three hundred forty-five million, four hundred twenty-five thousand, four hundred twenty-two".