242207720 has 16 divisors (see below), whose sum is σ = 544967460. Its totient is φ = 96883072.

The previous prime is 242207717. The next prime is 242207729. The reversal of 242207720 is 27702242.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 239692324 + 2515396 = 15482^2 + 1586^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 242207720.

It is not an unprimeable number, because it can be changed into a prime (242207729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3027557 + ... + 3027636.

Almost surely, 2^242207720 is an apocalyptic number.

242207720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242207720 is an abundant number, since it is smaller than the sum of its proper divisors (302759740).

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

242207720 is a wasteful number, since it uses less digits than its factorization.

242207720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6055204 (or 6055200 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 26.

The square root of 242207720 is about 15563.0241277202. The cubic root of 242207720 is about 623.3462155884.

Adding to 242207720 its reverse (27702242), we get a palindrome (269909962).

The spelling of 242207720 in words is "two hundred forty-two million, two hundred seven thousand, seven hundred twenty".