121662424 has 72 divisors (see below), whose sum is σ = 258216660. Its totient is φ = 53708928.

The previous prime is 121662407. The next prime is 121662503. The reversal of 121662424 is 424266121.

It is a junction number, because it is equal to n+sod(n) for n = 121662392 and 121662401.

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 1136979 + ... + 1137085.

Almost surely, 2^121662424 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 121662424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129108330).

121662424 is an abundant number, since it is smaller than the sum of its proper divisors (136554236).

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

121662424 is a wasteful number, since it uses less digits than its factorization.

121662424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197 (or 151 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

The square root of 121662424 is about 11030.0690840992. The cubic root of 121662424 is about 495.5096936815.

The spelling of 121662424 in words is "one hundred twenty-one million, six hundred sixty-two thousand, four hundred twenty-four".