242621165 has 8 divisors (see below), whose sum is σ = 306468960. Its totient is φ = 183881232.

The previous prime is 242621147. The next prime is 242621167. The reversal of 242621165 is 561126242.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 242621165 - 2¹⁴ = 242604781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242621167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1276859 + ... + 1277048.

It is an arithmetic number, because the mean of its divisors is an integer number (38308620).

Almost surely, 2^242621165 is an apocalyptic number.

It is an amenable number.

242621165 is a deficient number, since it is larger than the sum of its proper divisors (63847795).

242621165 is a wasteful number, since it uses less digits than its factorization.

242621165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2553931.

The product of its digits is 5760, while the sum is 29.

The square root of 242621165 is about 15576.3013902531. The cubic root of 242621165 is about 623.7006948951.

The spelling of 242621165 in words is "two hundred forty-two million, six hundred twenty-one thousand, one hundred sixty-five".