121610424 has 64 divisors (see below), whose sum is σ = 328557600. Its totient is φ = 37287936.

The previous prime is 121610413. The next prime is 121610443. The reversal of 121610424 is 424016121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 121610424.

It is a congruent number.

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, 127132 + ... + 128084.

Almost surely, 2^121610424 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 121610424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164278800).

121610424 is an abundant number, since it is smaller than the sum of its proper divisors (206947176).

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

121610424 is a wasteful number, since it uses less digits than its factorization.

121610424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1384 (or 1380 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 121610424 is about 11027.7116393203. The cubic root of 121610424 is about 495.4390879977.

Adding to 121610424 its reverse (424016121), we get a palindrome (545626545).

The spelling of 121610424 in words is "one hundred twenty-one million, six hundred ten thousand, four hundred twenty-four".