242664219 has 36 divisors (see below), whose sum is σ = 429216840. Its totient is φ = 131362560.

The previous prime is 242664211. The next prime is 242664251. The reversal of 242664219 is 912466242.

242664219 is a `hidden beast` number, since 2 + 4 + 2 + 6 + 642 + 1 + 9 = 666.

It is not a de Polignac number, because 242664219 - 2³ = 242664211 is a prime.

It is a super-2 number, since 2×242664219² = 117771846365759922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242664211) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6102 + ... + 22859.

It is an arithmetic number, because the mean of its divisors is an integer number (11922690).

Almost surely, 2^242664219 is an apocalyptic number.

242664219 is a deficient number, since it is larger than the sum of its proper divisors (186552621).

242664219 is a wasteful number, since it uses less digits than its factorization.

242664219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29000 (or 28990 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 242664219 is about 15577.6833643517. The cubic root of 242664219 is about 623.7375853583.

The spelling of 242664219 in words is "two hundred forty-two million, six hundred sixty-four thousand, two hundred nineteen".