121184726940 has 288 divisors, whose sum is σ = 399082844160. Its totient is φ = 30830284800.

The previous prime is 121184726939. The next prime is 121184726947. The reversal of 121184726940 is 49627481121.

121184726940 is a `hidden beast` number, since 1 + 2 + 118 + 472 + 69 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121184726947) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 10691196 + ... + 10702524.

It is an arithmetic number, because the mean of its divisors is an integer number (1385704320).

Almost surely, 2^121184726940 is an apocalyptic number.

121184726940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121184726940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199541422080).

121184726940 is an abundant number, since it is smaller than the sum of its proper divisors (277898117220).

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

121184726940 is a wasteful number, since it uses less digits than its factorization.

121184726940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11455 (or 11441 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 121184726940 in words is "one hundred twenty-one billion, one hundred eighty-four million, seven hundred twenty-six thousand, nine hundred forty".