242215660 has 48 divisors (see below), whose sum is σ = 539904960. Its totient is φ = 90961920.

The previous prime is 242215657. The next prime is 242215661. The reversal of 242215660 is 66512242.

It is not an unprimeable number, because it can be changed into a prime (242215661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213976 + ... + 215104.

It is an arithmetic number, because the mean of its divisors is an integer number (11248020).

Almost surely, 2^242215660 is an apocalyptic number.

242215660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 242215660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269952480).

242215660 is an abundant number, since it is smaller than the sum of its proper divisors (297689300).

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

242215660 is a wasteful number, since it uses less digits than its factorization.

242215660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1786 (or 1784 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 242215660 is about 15563.2792174400. The cubic root of 242215660 is about 623.3530269800.

The spelling of 242215660 in words is "two hundred forty-two million, two hundred fifteen thousand, six hundred sixty".