121820748 has 48 divisors (see below), whose sum is σ = 328226304. Its totient is φ = 34444800.

The previous prime is 121820747. The next prime is 121820771. The reversal of 121820748 is 847028121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (121820747) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 673 + ... + 15623.

It is an arithmetic number, because the mean of its divisors is an integer number (6838048).

Almost surely, 2^121820748 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 121820748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164113152).

121820748 is an abundant number, since it is smaller than the sum of its proper divisors (206405556).

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

121820748 is a wasteful number, since it uses less digits than its factorization.

121820748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15062 (or 15060 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 33.

The square root of 121820748 is about 11037.2436776579. The cubic root of 121820748 is about 495.7245424636.

Adding to 121820748 its reverse (847028121), we get a palindrome (968848869).

The spelling of 121820748 in words is "one hundred twenty-one million, eight hundred twenty thousand, seven hundred forty-eight".