242213423 has 4 divisors (see below), whose sum is σ = 250565640. Its totient is φ = 233861208.

The previous prime is 242213417. The next prime is 242213449. The reversal of 242213423 is 324312242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324312242 = 2 ⋅162156121.

It is a cyclic number.

It is not a de Polignac number, because 242213423 - 2⁴ = 242213407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242213623) 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, 4176065 + ... + 4176122.

It is an arithmetic number, because the mean of its divisors is an integer number (62641410).

Almost surely, 2^242213423 is an apocalyptic number.

242213423 is a deficient number, since it is larger than the sum of its proper divisors (8352217).

242213423 is an equidigital number, since it uses as much as digits as its factorization.

242213423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8352216.

The product of its digits is 2304, while the sum is 23.

The square root of 242213423 is about 15563.2073493866. The cubic root of 242213423 is about 623.3511079670.

Adding to 242213423 its reverse (324312242), we get a palindrome (566525665).

It can be divided in two parts, 242 and 213423, that multiplied together give a triangular number (51648366 = T₁₀₁₆₃).

The spelling of 242213423 in words is "two hundred forty-two million, two hundred thirteen thousand, four hundred twenty-three".