242220315 has 32 divisors (see below), whose sum is σ = 399237120. Its totient is φ = 125311104.

The previous prime is 242220313. The next prime is 242220317. The reversal of 242220315 is 513022242.

It is an interprime number because it is at equal distance from previous prime (242220313) and next prime (242220317).

It is not a de Polignac number, because 242220315 - 2¹ = 242220313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 242220291 and 242220300.

It is not an unprimeable number, because it can be changed into a prime (242220313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 336526 + ... + 337244.

It is an arithmetic number, because the mean of its divisors is an integer number (12476160).

Almost surely, 2^242220315 is an apocalyptic number.

242220315 is a deficient number, since it is larger than the sum of its proper divisors (157016805).

242220315 is a wasteful number, since it uses less digits than its factorization.

242220315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1371.

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

The square root of 242220315 is about 15563.4287674664. The cubic root of 242220315 is about 623.3570202392.

Adding to 242220315 its reverse (513022242), we get a palindrome (755242557).

The spelling of 242220315 in words is "two hundred forty-two million, two hundred twenty thousand, three hundred fifteen".