121654272 has 66 divisors (see below), whose sum is σ = 325890588. Its totient is φ = 40347648.

The previous prime is 121654249. The next prime is 121654277. The reversal of 121654272 is 272456121.

It is not an unprimeable number, because it can be changed into a prime (121654277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 611229 + ... + 611427.

Almost surely, 2^121654272 is an apocalyptic number.

121654272 is a gapful number since it is divisible by the number (12) 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 121654272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162945294).

121654272 is an abundant number, since it is smaller than the sum of its proper divisors (204236316).

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

121654272 is an frugal number, since it uses more digits than its factorization.

121654272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421 (or 204 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 121654272 is about 11029.6995425986. The cubic root of 121654272 is about 495.4986262127.

The spelling of 121654272 in words is "one hundred twenty-one million, six hundred fifty-four thousand, two hundred seventy-two".