1121480 has 48 divisors (see below), whose sum is σ = 2687580. Its totient is φ = 420992.

The previous prime is 1121453. The next prime is 1121509. The reversal of 1121480 is 841211.

It is a Cunningham number, because it is equal to 1059²-1.

It can be written as a sum of positive squares in 2 ways, for example, as 1119364 + 2116 = 1058^2 + 46^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21134 + ... + 21186.

2^1121480 is an apocalyptic number.

1121480 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 1121480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1343790).

1121480 is an abundant number, since it is smaller than the sum of its proper divisors (1566100).

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

1121480 is a wasteful number, since it uses less digits than its factorization.

1121480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 1121480 is about 1058.9995278564. Note that the first 3 decimals coincide. The cubic root of 1121480 is about 103.8956053033.

Adding to 1121480 its reverse (841211), we get a palindrome (1962691).

The spelling of 1121480 in words is "one million, one hundred twenty-one thousand, four hundred eighty".