215301242 has 8 divisors (see below), whose sum is σ = 347794356. Its totient is φ = 99369792.

The previous prime is 215301223. The next prime is 215301259. The reversal of 215301242 is 242103512.

It can be written as a sum of positive squares in 2 ways, for example, as 215238241 + 63001 = 14671^2 + 251^2 .

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, 4140383 + ... + 4140434.

Almost surely, 2^215301242 is an apocalyptic number.

215301242 is a deficient number, since it is larger than the sum of its proper divisors (132493114).

215301242 is a wasteful number, since it uses less digits than its factorization.

215301242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8280832.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 215301242 is about 14673.1469698903. The cubic root of 215301242 is about 599.3523029176.

Adding to 215301242 its reverse (242103512), we get a palindrome (457404754).

The spelling of 215301242 in words is "two hundred fifteen million, three hundred one thousand, two hundred forty-two".