121731852 has 24 divisors (see below), whose sum is σ = 309863232. Its totient is φ = 36888400.

The previous prime is 121731851. The next prime is 121731859. The reversal of 121731852 is 258137121.

It is not an unprimeable number, because it can be changed into a prime (121731851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 460974 + ... + 461237.

It is an arithmetic number, because the mean of its divisors is an integer number (12910968).

Almost surely, 2^121731852 is an apocalyptic number.

121731852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121731852 is an abundant number, since it is smaller than the sum of its proper divisors (188131380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121731852 is a wasteful number, since it uses less digits than its factorization.

121731852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922229 (or 922227 counting only the distinct ones).

The product of its digits is 3360, while the sum is 30.

The square root of 121731852 is about 11033.2158503312. The cubic root of 121731852 is about 495.6039317761.

Adding to 121731852 its reverse (258137121), we get a palindrome (379868973).

The spelling of 121731852 in words is "one hundred twenty-one million, seven hundred thirty-one thousand, eight hundred fifty-two".