345421252 has 24 divisors (see below), whose sum is σ = 665612640. Its totient is φ = 155540160.

The previous prime is 345421243. The next prime is 345421267. The reversal of 345421252 is 252124543.

It is a self number, because there is not a number n which added to its sum of digits gives 345421252.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31977 + ... + 41392.

It is an arithmetic number, because the mean of its divisors is an integer number (27733860).

Almost surely, 2^345421252 is an apocalyptic number.

It is an amenable number.

345421252 is a deficient number, since it is larger than the sum of its proper divisors (320191388).

345421252 is a wasteful number, since it uses less digits than its factorization.

345421252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73491 (or 73489 counting only the distinct ones).

The product of its digits is 9600, while the sum is 28.

The square root of 345421252 is about 18585.5118842608. The cubic root of 345421252 is about 701.6432496578.

Adding to 345421252 its reverse (252124543), we get a palindrome (597545795).

The spelling of 345421252 in words is "three hundred forty-five million, four hundred twenty-one thousand, two hundred fifty-two".