242538019 has 8 divisors (see below), whose sum is σ = 244578960. Its totient is φ = 240505056.

The previous prime is 242537989. The next prime is 242538029. The reversal of 242538019 is 910835242.

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 242538019 - 2¹³ = 242529827 is a prime.

It is a super-2 number, since 2×242538019² = 117649381320888722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242538029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69357 + ... + 72769.

It is an arithmetic number, because the mean of its divisors is an integer number (30572370).

Almost surely, 2^242538019 is an apocalyptic number.

242538019 is a deficient number, since it is larger than the sum of its proper divisors (2040941).

242538019 is a wasteful number, since it uses less digits than its factorization.

242538019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3989.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 242538019 is about 15573.6321710769. The cubic root of 242538019 is about 623.6294395795.

The spelling of 242538019 in words is "two hundred forty-two million, five hundred thirty-eight thousand, nineteen".