238121 has 6 divisors (see below), whose sum is σ = 258030. Its totient is φ = 219648.

The previous prime is 238109. The next prime is 238141. The reversal of 238121 is 121832.

It can be written as a sum of positive squares in 3 ways, for example, as 25600 + 212521 = 160^2 + 461^2 .

It is not a de Polignac number, because 238121 - 2¹⁴ = 221737 is a prime.

It is a super-2 number, since 2×238121² = 113403221282, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 238121.

It is not an unprimeable number, because it can be changed into a prime (238141) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 536 + ... + 873.

It is an arithmetic number, because the mean of its divisors is an integer number (43005).

2²³⁸¹²¹ is an apocalyptic number.

It is an amenable number.

238121 is a deficient number, since it is larger than the sum of its proper divisors (19909).

238121 is a wasteful number, since it uses less digits than its factorization.

238121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1435 (or 1422 counting only the distinct ones).

The product of its digits is 96, while the sum is 17.

The square root of 238121 is about 487.9764338572. The cubic root of 238121 is about 61.9820447486.

Adding to 238121 its reverse (121832), we get a palindrome (359953).

The spelling of 238121 in words is "two hundred thirty-eight thousand, one hundred twenty-one".