238868123 has 4 divisors (see below), whose sum is σ = 257242608. Its totient is φ = 220493640.

The previous prime is 238868117. The next prime is 238868137. The reversal of 238868123 is 321868832.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238868123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238868153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9187223 + ... + 9187248.

It is an arithmetic number, because the mean of its divisors is an integer number (64310652).

Almost surely, 2^238868123 is an apocalyptic number.

238868123 is a deficient number, since it is larger than the sum of its proper divisors (18374485).

238868123 is a wasteful number, since it uses less digits than its factorization.

238868123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18374484.

The product of its digits is 110592, while the sum is 41.

The square root of 238868123 is about 15455.3590382107. The cubic root of 238868123 is about 620.4680155098.

The spelling of 238868123 in words is "two hundred thirty-eight million, eight hundred sixty-eight thousand, one hundred twenty-three".