1921120 has 24 divisors (see below), whose sum is σ = 4539024. Its totient is φ = 768384.

The previous prime is 1921103. The next prime is 1921123. The reversal of 1921120 is 211291.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 1921094 and 1921103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1921123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5844 + ... + 6163.

It is an arithmetic number, because the mean of its divisors is an integer number (189126).

2^1921120 is an apocalyptic number.

1921120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1921120 is an abundant number, since it is smaller than the sum of its proper divisors (2617904).

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

1921120 is a wasteful number, since it uses less digits than its factorization.

1921120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12022 (or 12014 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 1921120 is about 1386.0447323229. The cubic root of 1921120 is about 124.3134629044.

The spelling of 1921120 in words is "one million, nine hundred twenty-one thousand, one hundred twenty".