121149424 has 80 divisors (see below), whose sum is σ = 266482944. Its totient is φ = 52876800.

The previous prime is 121149421. The next prime is 121149437. The reversal of 121149424 is 424941121.

It is a junction number, because it is equal to n+sod(n) for n = 121149392 and 121149401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121149421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 743167 + ... + 743329.

Almost surely, 2^121149424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121149424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133241472).

121149424 is an abundant number, since it is smaller than the sum of its proper divisors (145333520).

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

121149424 is a wasteful number, since it uses less digits than its factorization.

121149424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326 (or 320 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 121149424 is about 11006.7899044181. The cubic root of 121149424 is about 494.8122595185.

The spelling of 121149424 in words is "one hundred twenty-one million, one hundred forty-nine thousand, four hundred twenty-four".