121847040 has 216 divisors, whose sum is σ = 482122368. Its totient is φ = 27832320.

The previous prime is 121847029. The next prime is 121847069. The reversal of 121847040 is 40748121.

It is a junction number, because it is equal to n+sod(n) for n = 121846995 and 121847013.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79885 + ... + 81395.

It is an arithmetic number, because the mean of its divisors is an integer number (2232048).

Almost surely, 2^121847040 is an apocalyptic number.

121847040 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 121847040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241061184).

121847040 is an abundant number, since it is smaller than the sum of its proper divisors (360275328).

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

121847040 is a wasteful number, since it uses less digits than its factorization.

121847040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1545 (or 1528 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 121847040 is about 11038.4346716371. The cubic root of 121847040 is about 495.7602031982.

The spelling of 121847040 in words is "one hundred twenty-one million, eight hundred forty-seven thousand, forty".