121617452 has 12 divisors (see below), whose sum is σ = 232178856. Its totient is φ = 55280640.

The previous prime is 121617451. The next prime is 121617479. The reversal of 121617452 is 254716121.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (121617451) 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, 1381973 + ... + 1382060.

It is an arithmetic number, because the mean of its divisors is an integer number (19348238).

Almost surely, 2^121617452 is an apocalyptic number.

It is an amenable number.

121617452 is a deficient number, since it is larger than the sum of its proper divisors (110561404).

121617452 is a wasteful number, since it uses less digits than its factorization.

121617452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2764048 (or 2764046 counting only the distinct ones).

The product of its digits is 3360, while the sum is 29.

The square root of 121617452 is about 11028.0302865018. The cubic root of 121617452 is about 495.4486318036.

The spelling of 121617452 in words is "one hundred twenty-one million, six hundred seventeen thousand, four hundred fifty-two".