242340023 has 4 divisors (see below), whose sum is σ = 242490600. Its totient is φ = 242189448.

The previous prime is 242340013. The next prime is 242340067. The reversal of 242340023 is 320043242.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 242340023 - 2¹² = 242335927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 242339977 and 242340004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242340013) 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, 72848 + ... + 76101.

It is an arithmetic number, because the mean of its divisors is an integer number (60622650).

Almost surely, 2^242340023 is an apocalyptic number.

242340023 is a deficient number, since it is larger than the sum of its proper divisors (150577).

242340023 is a wasteful number, since it uses less digits than its factorization.

242340023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150576.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 242340023 is about 15567.2741030663. The cubic root of 242340023 is about 623.4596933404.

Adding to 242340023 its reverse (320043242), we get a palindrome (562383265).

The spelling of 242340023 in words is "two hundred forty-two million, three hundred forty thousand, twenty-three".