9421557120 has 384 divisors, whose sum is σ = 34918884000. Its totient is φ = 2424619008.

The previous prime is 9421557109. The next prime is 9421557127. The reversal of 9421557120 is 217551249.

9421557120 is a `hidden beast` number, since 94 + 2 + 1 + 557 + 12 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9421557127) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4509036 + ... + 4511124.

Almost surely, 2^9421557120 is an apocalyptic number.

9421557120 is a gapful number since it is divisible by the number (90) 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 9421557120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17459442000).

9421557120 is an abundant number, since it is smaller than the sum of its proper divisors (25497326880).

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

9421557120 is a wasteful number, since it uses less digits than its factorization.

9421557120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2152 (or 2128 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 9421557120 is about 97064.7058410007. The cubic root of 9421557120 is about 2112.0663718811.

The spelling of 9421557120 in words is "nine billion, four hundred twenty-one million, five hundred fifty-seven thousand, one hundred twenty".