345420406 has 8 divisors (see below), whose sum is σ = 518379480. Its totient is φ = 172627248.

The previous prime is 345420401. The next prime is 345420431. The reversal of 345420406 is 604024543.

345420406 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345420401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36136 + ... + 44683.

It is an arithmetic number, because the mean of its divisors is an integer number (64797435).

Almost surely, 2^345420406 is an apocalyptic number.

345420406 is a deficient number, since it is larger than the sum of its proper divisors (172959074).

345420406 is a wasteful number, since it uses less digits than its factorization.

345420406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82958.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 345420406 is about 18585.4891245832. The cubic root of 345420406 is about 701.6426768397.

Adding to 345420406 its reverse (604024543), we get a palindrome (949444949).

The spelling of 345420406 in words is "three hundred forty-five million, four hundred twenty thousand, four hundred six".