242122658 has 4 divisors (see below), whose sum is σ = 363183990. Its totient is φ = 121061328.

The previous prime is 242122651. The next prime is 242122693. The reversal of 242122658 is 856221242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 856221242 = 2 ⋅428110621.

It can be written as a sum of positive squares in only one way, i.e., 241709209 + 413449 = 15547^2 + 643^2 .

It is not an unprimeable number, because it can be changed into a prime (242122651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60530663 + ... + 60530666.

Almost surely, 2^242122658 is an apocalyptic number.

242122658 is a deficient number, since it is larger than the sum of its proper divisors (121061332).

242122658 is a wasteful number, since it uses less digits than its factorization.

242122658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121061331.

The product of its digits is 15360, while the sum is 32.

The square root of 242122658 is about 15560.2910641157. The cubic root of 242122658 is about 623.2732351399.

The spelling of 242122658 in words is "two hundred forty-two million, one hundred twenty-two thousand, six hundred fifty-eight".