242002639 has 8 divisors (see below), whose sum is σ = 255645440. Its totient is φ = 228450456.

The previous prime is 242002637. The next prime is 242002643. The reversal of 242002639 is 936200242.

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 242002639 - 2¹ = 242002637 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 (242002637) 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, 17127 + ... + 27880.

It is an arithmetic number, because the mean of its divisors is an integer number (31955680).

Almost surely, 2^242002639 is an apocalyptic number.

242002639 is a deficient number, since it is larger than the sum of its proper divisors (13642801).

242002639 is a wasteful number, since it uses less digits than its factorization.

242002639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45309.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 242002639 is about 15556.4340065453. The cubic root of 242002639 is about 623.1702336357.

The spelling of 242002639 in words is "two hundred forty-two million, two thousand, six hundred thirty-nine".