242266660 has 48 divisors (see below), whose sum is σ = 541571184. Its totient is φ = 90718208.

The previous prime is 242266649. The next prime is 242266669. The reversal of 242266660 is 66662242.

It can be written as a sum of positive squares in 8 ways, for example, as 401956 + 241864704 = 634^2 + 15552^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (242266669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65172 + ... + 68788.

It is an arithmetic number, because the mean of its divisors is an integer number (11282733).

Almost surely, 2^242266660 is an apocalyptic number.

242266660 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 242266660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270785592).

242266660 is an abundant number, since it is smaller than the sum of its proper divisors (299304524).

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

242266660 is a wasteful number, since it uses less digits than its factorization.

242266660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3840 (or 3838 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 242266660 is about 15564.9176033797. The cubic root of 242266660 is about 623.3967741836.

The spelling of 242266660 in words is "two hundred forty-two million, two hundred sixty-six thousand, six hundred sixty".