121655464 has 64 divisors (see below), whose sum is σ = 281491200. Its totient is φ = 48136704.

The previous prime is 121655437. The next prime is 121655477. The reversal of 121655464 is 464556121.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35724 + ... + 38980.

It is an arithmetic number, because the mean of its divisors is an integer number (4398300).

Almost surely, 2^121655464 is an apocalyptic number.

121655464 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121655464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140745600).

121655464 is an abundant number, since it is smaller than the sum of its proper divisors (159835736).

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

121655464 is a wasteful number, since it uses less digits than its factorization.

121655464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3322 (or 3318 counting only the distinct ones).

The product of its digits is 28800, while the sum is 34.

The square root of 121655464 is about 11029.7535783897. The cubic root of 121655464 is about 495.5002445486.

The spelling of 121655464 in words is "one hundred twenty-one million, six hundred fifty-five thousand, four hundred sixty-four".