242342121 has 8 divisors (see below), whose sum is σ = 369283264. Its totient is φ = 138481200.

The previous prime is 242342117. The next prime is 242342147. The reversal of 242342121 is 121243242.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 242342121 - 2² = 242342117 is a prime.

It is a super-2 number, since 2×242342121² = 117459407221557282, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 11540101 = 242342121 / (2 + 4 + 2 + 3 + 4 + 2 + 1 + 2 + 1).

It is not an unprimeable number, because it can be changed into a prime (242342171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5770030 + ... + 5770071.

It is an arithmetic number, because the mean of its divisors is an integer number (46160408).

Almost surely, 2^242342121 is an apocalyptic number.

242342121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

242342121 is a deficient number, since it is larger than the sum of its proper divisors (126941143).

242342121 is a wasteful number, since it uses less digits than its factorization.

242342121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11540111.

The product of its digits is 768, while the sum is 21.

The square root of 242342121 is about 15567.3414878713. The cubic root of 242342121 is about 623.4614924856.

Adding to 242342121 its reverse (121243242), we get a palindrome (363585363).

It can be divided in two parts, 2423 and 42121, that added together give a palindrome (44544).

The spelling of 242342121 in words is "two hundred forty-two million, three hundred forty-two thousand, one hundred twenty-one".