242320819 has 12 divisors (see below), whose sum is σ = 262861200. Its totient is φ = 223283424.

The previous prime is 242320811. The next prime is 242320829. The reversal of 242320819 is 918023242.

It is not a de Polignac number, because 242320819 - 2³ = 242320811 is a prime.

It is a super-2 number, since 2×242320819² = 117438758641661522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242320811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 140937 + ... + 142645.

It is an arithmetic number, because the mean of its divisors is an integer number (21905100).

Almost surely, 2^242320819 is an apocalyptic number.

242320819 is a deficient number, since it is larger than the sum of its proper divisors (20540381).

242320819 is a wasteful number, since it uses less digits than its factorization.

242320819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2574 (or 2561 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 242320819 is about 15566.6572840800. The cubic root of 242320819 is about 623.4432244192.

The spelling of 242320819 in words is "two hundred forty-two million, three hundred twenty thousand, eight hundred nineteen".