342821825 has 6 divisors (see below), whose sum is σ = 425099094. Its totient is φ = 274257440.

The previous prime is 342821771. The next prime is 342821837. The reversal of 342821825 is 528128243.

It can be written as a sum of positive squares in 3 ways, for example, as 72318016 + 270503809 = 8504^2 + 16447^2 .

It is not a de Polignac number, because 342821825 - 2¹⁸ = 342559681 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6856412 + ... + 6856461.

It is an arithmetic number, because the mean of its divisors is an integer number (70849849).

Almost surely, 2^342821825 is an apocalyptic number.

It is an amenable number.

342821825 is a deficient number, since it is larger than the sum of its proper divisors (82277269).

342821825 is a wasteful number, since it uses less digits than its factorization.

342821825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13712883 (or 13712878 counting only the distinct ones).

The product of its digits is 30720, while the sum is 35.

The square root of 342821825 is about 18515.4482797474. The cubic root of 342821825 is about 699.8787715234.

It can be divided in two parts, 3428218 and 25, that added together give a palindrome (3428243).

The spelling of 342821825 in words is "three hundred forty-two million, eight hundred twenty-one thousand, eight hundred twenty-five".