242222351 has 4 divisors (see below), whose sum is σ = 276825552. Its totient is φ = 207619152.

The previous prime is 242222329. The next prime is 242222359. The reversal of 242222351 is 153222242.

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 242222351 - 2²⁶ = 175113487 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 (242222359) 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, 17301590 + ... + 17301603.

It is an arithmetic number, because the mean of its divisors is an integer number (69206388).

Almost surely, 2^242222351 is an apocalyptic number.

242222351 is a deficient number, since it is larger than the sum of its proper divisors (34603201).

242222351 is an equidigital number, since it uses as much as digits as its factorization.

242222351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34603200.

The product of its digits is 1920, while the sum is 23.

The square root of 242222351 is about 15563.4941770799. The cubic root of 242222351 is about 623.3587667915.

Adding to 242222351 its reverse (153222242), we get a palindrome (395444593).

The spelling of 242222351 in words is "two hundred forty-two million, two hundred twenty-two thousand, three hundred fifty-one".