215042330 has 8 divisors (see below), whose sum is σ = 387076212. Its totient is φ = 86016928.

The previous prime is 215042291. The next prime is 215042351. The reversal of 215042330 is 33240512.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 200987329 + 14055001 = 14177^2 + 3749^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10752107 + ... + 10752126.

Almost surely, 2^215042330 is an apocalyptic number.

215042330 is a deficient number, since it is larger than the sum of its proper divisors (172033882).

215042330 is a wasteful number, since it uses less digits than its factorization.

215042330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21504240.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 215042330 is about 14664.3216685942. The cubic root of 215042330 is about 599.1119547932. Note that the first 3 decimals are identical.

Adding to 215042330 its reverse (33240512), we get a palindrome (248282842).

The spelling of 215042330 in words is "two hundred fifteen million, forty-two thousand, three hundred thirty".