121538468 has 18 divisors (see below), whose sum is σ = 217766934. Its totient is φ = 59352384.

The previous prime is 121538453. The next prime is 121538471. The reversal of 121538468 is 864835121.

It can be written as a sum of positive squares in only one way, i.e., 121176064 + 362404 = 11008^2 + 602^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 821 + ... + 15612.

It is an arithmetic number, because the mean of its divisors is an integer number (12098163).

Almost surely, 2^121538468 is an apocalyptic number.

It is an amenable number.

121538468 is a deficient number, since it is larger than the sum of its proper divisors (96228466).

121538468 is a wasteful number, since it uses less digits than its factorization.

121538468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16523 (or 16478 counting only the distinct ones).

The product of its digits is 46080, while the sum is 38.

The square root of 121538468 is about 11024.4486483452. The cubic root of 121538468 is about 495.3413528217.

The spelling of 121538468 in words is "one hundred twenty-one million, five hundred thirty-eight thousand, four hundred sixty-eight".