215203242 has 16 divisors (see below), whose sum is σ = 437463072. Its totient is φ = 70558320.

The previous prime is 215203223. The next prime is 215203259. The reversal of 215203242 is 242302512.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 293628 + ... + 294359.

It is an arithmetic number, because the mean of its divisors is an integer number (27341442).

Almost surely, 2^215203242 is an apocalyptic number.

215203242 is an abundant number, since it is smaller than the sum of its proper divisors (222259830).

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

215203242 is a wasteful number, since it uses less digits than its factorization.

215203242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588053.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 215203242 is about 14669.8071561967. The cubic root of 215203242 is about 599.2613521499.

Adding to 215203242 its reverse (242302512), we get a palindrome (457505754).

The spelling of 215203242 in words is "two hundred fifteen million, two hundred three thousand, two hundred forty-two".