242893619 has 6 divisors (see below), whose sum is σ = 247132260. Its totient is φ = 238659096.

The previous prime is 242893597. The next prime is 242893631. The reversal of 242893619 is 916398242.

It is a de Polignac number, because none of the positive numbers 2^k-242893619 is a prime.

It is a super-2 number, since 2×242893619² = 117994620301834322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 242893619.

It is not an unprimeable number, because it can be changed into a prime (242893699) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 118697 + ... + 120725.

It is an arithmetic number, because the mean of its divisors is an integer number (41188710).

Almost surely, 2^242893619 is an apocalyptic number.

242893619 is a deficient number, since it is larger than the sum of its proper divisors (4238641).

242893619 is an frugal number, since it uses more digits than its factorization.

242893619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4117 (or 2088 counting only the distinct ones).

The product of its digits is 186624, while the sum is 44.

The square root of 242893619 is about 15585.0447224254. The cubic root of 242893619 is about 623.9340713205.

The spelling of 242893619 in words is "two hundred forty-two million, eight hundred ninety-three thousand, six hundred nineteen".