242120023 has 4 divisors (see below), whose sum is σ = 242192088. Its totient is φ = 242047960.

The previous prime is 242120017. The next prime is 242120029. The reversal of 242120023 is 320021242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320021242 = 2 ⋅160010621.

It is an interprime number because it is at equal distance from previous prime (242120017) and next prime (242120029).

It is a cyclic number.

It is not a de Polignac number, because 242120023 - 2⁵ = 242119991 is a prime.

It is a super-3 number, since 3×242120023³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 242119979 and 242120006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242120029) 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, 30733 + ... + 37798.

It is an arithmetic number, because the mean of its divisors is an integer number (60548022).

Almost surely, 2^242120023 is an apocalyptic number.

242120023 is a deficient number, since it is larger than the sum of its proper divisors (72065).

242120023 is an equidigital number, since it uses as much as digits as its factorization.

242120023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72064.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 242120023 is about 15560.2063932327. The cubic root of 242120023 is about 623.2709741221.

Adding to 242120023 its reverse (320021242), we get a palindrome (562141265).

The spelling of 242120023 in words is "two hundred forty-two million, one hundred twenty thousand, twenty-three".