9121140 has 192 divisors, whose sum is σ = 34406400. Its totient is φ = 1959552.

The previous prime is 9121097. The next prime is 9121153. The reversal of 9121140 is 411219.

9121140 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 71757 + ... + 71883.

It is an arithmetic number, because the mean of its divisors is an integer number (179200).

Almost surely, 2^9121140 is an apocalyptic number.

9121140 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 9121140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17203200).

9121140 is an abundant number, since it is smaller than the sum of its proper divisors (25285260).

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

9121140 is a wasteful number, since it uses less digits than its factorization.

9121140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 9121140 is about 3020.1225140712. The cubic root of 9121140 is about 208.9374903678.

Adding to 9121140 its reverse (411219), we get a palindrome (9532359).

It can be divided in two parts, 9121 and 140, that added together give a cube (9261 = 21³).

The spelling of 9121140 in words is "nine million, one hundred twenty-one thousand, one hundred forty".