242042393 has 4 divisors (see below), whose sum is σ = 247945908. Its totient is φ = 236138880.

The previous prime is 242042371. The next prime is 242042417. The reversal of 242042393 is 393240242.

242042393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 393240242 = 2 ⋅196620121.

It can be written as a sum of positive squares in 2 ways, for example, as 69172489 + 172869904 = 8317^2 + 13148^2 .

It is a cyclic number.

It is not a de Polignac number, because 242042393 - 2⁶ = 242042329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242042303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2951696 + ... + 2951777.

It is an arithmetic number, because the mean of its divisors is an integer number (61986477).

Almost surely, 2^242042393 is an apocalyptic number.

It is an amenable number.

242042393 is a deficient number, since it is larger than the sum of its proper divisors (5903515).

242042393 is an equidigital number, since it uses as much as digits as its factorization.

242042393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5903514.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 242042393 is about 15557.7116890628. The cubic root of 242042393 is about 623.2043546866.

The spelling of 242042393 in words is "two hundred forty-two million, forty-two thousand, three hundred ninety-three".