345421212 has 48 divisors (see below), whose sum is σ = 822162432. Its totient is φ = 112852800.

The previous prime is 345421211. The next prime is 345421229. The reversal of 345421212 is 212124543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345421211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123453 + ... + 126219.

It is an arithmetic number, because the mean of its divisors is an integer number (17128384).

Almost surely, 2^345421212 is an apocalyptic number.

It is an amenable number.

345421212 is an abundant number, since it is smaller than the sum of its proper divisors (476741220).

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

345421212 is a wasteful number, since it uses less digits than its factorization.

345421212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2978 (or 2976 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 345421212 is about 18585.5108081538. The cubic root of 345421212 is about 701.6432225742.

Adding to 345421212 its reverse (212124543), we get a palindrome (557545755).

The spelling of 345421212 in words is "three hundred forty-five million, four hundred twenty-one thousand, two hundred twelve".