242243409 has 16 divisors (see below), whose sum is σ = 338843520. Its totient is φ = 153726720.

The previous prime is 242243389. The next prime is 242243413. The reversal of 242243409 is 904342242.

242243409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 242243409 - 2¹¹ = 242241361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242243479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13432 + ... + 25785.

It is an arithmetic number, because the mean of its divisors is an integer number (21177720).

Almost surely, 2^242243409 is an apocalyptic number.

242243409 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

242243409 is a deficient number, since it is larger than the sum of its proper divisors (96600111).

242243409 is a wasteful number, since it uses less digits than its factorization.

242243409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39320.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 242243409 is about 15564.1706814080. The cubic root of 242243409 is about 623.3768305093.

The spelling of 242243409 in words is "two hundred forty-two million, two hundred forty-three thousand, four hundred nine".