121788452 has 12 divisors (see below), whose sum is σ = 216624156. Its totient is φ = 59895840.

The previous prime is 121788437. The next prime is 121788481. The reversal of 121788452 is 254887121.

It can be written as a sum of positive squares in 2 ways, for example, as 37258816 + 84529636 = 6104^2 + 9194^2 .

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249323 + ... + 249810.

It is an arithmetic number, because the mean of its divisors is an integer number (18052013).

Almost surely, 2^121788452 is an apocalyptic number.

It is an amenable number.

121788452 is a deficient number, since it is larger than the sum of its proper divisors (94835704).

121788452 is a wasteful number, since it uses less digits than its factorization.

121788452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499198 (or 499196 counting only the distinct ones).

The product of its digits is 35840, while the sum is 38.

The square root of 121788452 is about 11035.7805342441. The cubic root of 121788452 is about 495.6807312762.

The spelling of 121788452 in words is "one hundred twenty-one million, seven hundred eighty-eight thousand, four hundred fifty-two".