242551219 has 8 divisors (see below), whose sum is σ = 243804672. Its totient is φ = 241301760.

The previous prime is 242551213. The next prime is 242551237. The reversal of 242551219 is 912155242.

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 242551219 - 2¹⁷ = 242420147 is a prime.

It is a super-2 number, since 2×242551219² = 117662187676771922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242551213) 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, 257289 + ... + 258229.

It is an arithmetic number, because the mean of its divisors is an integer number (30475584).

Almost surely, 2^242551219 is an apocalyptic number.

242551219 is a deficient number, since it is larger than the sum of its proper divisors (1253453).

242551219 is an equidigital number, since it uses as much as digits as its factorization.

242551219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997.

The product of its digits is 7200, while the sum is 31.

The square root of 242551219 is about 15574.0559585485. The cubic root of 242551219 is about 623.6407529388.

The spelling of 242551219 in words is "two hundred forty-two million, five hundred fifty-one thousand, two hundred nineteen".