242216501 has 4 divisors (see below), whose sum is σ = 242433312. Its totient is φ = 241999692.

The previous prime is 242216489. The next prime is 242216509. The reversal of 242216501 is 105612242.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242216501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242216509) 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 3 ways as a sum of consecutive naturals, for example, 106721 + ... + 108966.

It is an arithmetic number, because the mean of its divisors is an integer number (60608328).

Almost surely, 2^242216501 is an apocalyptic number.

It is an amenable number.

242216501 is a deficient number, since it is larger than the sum of its proper divisors (216811).

242216501 is a wasteful number, since it uses less digits than its factorization.

242216501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216810.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 242216501 is about 15563.3062361440. The cubic root of 242216501 is about 623.3537484298.

Adding to 242216501 its reverse (105612242), we get a palindrome (347828743).

The spelling of 242216501 in words is "two hundred forty-two million, two hundred sixteen thousand, five hundred one".