242108215 has 4 divisors (see below), whose sum is σ = 290529864. Its totient is φ = 193686568.

The previous prime is 242108197. The next prime is 242108267. The reversal of 242108215 is 512801242.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 242108215 - 2¹⁷ = 241977143 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 242108215.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 24210817 + ... + 24210826.

It is an arithmetic number, because the mean of its divisors is an integer number (72632466).

Almost surely, 2^242108215 is an apocalyptic number.

242108215 is a deficient number, since it is larger than the sum of its proper divisors (48421649).

242108215 is an equidigital number, since it uses as much as digits as its factorization.

242108215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48421648.

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 242108215 is about 15559.8269591921. The cubic root of 242108215 is about 623.2608418150.

Adding to 242108215 its reverse (512801242), we get a palindrome (754909457).

The spelling of 242108215 in words is "two hundred forty-two million, one hundred eight thousand, two hundred fifteen".