121747152 has 40 divisors (see below), whose sum is σ = 314979840. Its totient is φ = 40522240.

The previous prime is 121747151. The next prime is 121747169. The reversal of 121747152 is 251747121.

It is a super-2 number, since 2×121747152² = 29644738040222208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121747151) 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, 40849 + ... + 43727.

It is an arithmetic number, because the mean of its divisors is an integer number (7874496).

Almost surely, 2^121747152 is an apocalyptic number.

121747152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121747152 is an abundant number, since it is smaller than the sum of its proper divisors (193232688).

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

121747152 is a wasteful number, since it uses less digits than its factorization.

121747152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3771 (or 3765 counting only the distinct ones).

The product of its digits is 3920, while the sum is 30.

The square root of 121747152 is about 11033.9091894034. The cubic root of 121747152 is about 495.6246944124.

The spelling of 121747152 in words is "one hundred twenty-one million, seven hundred forty-seven thousand, one hundred fifty-two".