1120640 has 64 divisors (see below), whose sum is σ = 2864160. Its totient is φ = 417792.

The previous prime is 1120633. The next prime is 1120649. The reversal of 1120640 is 460211.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10829 + ... + 10931.

2^1120640 is an apocalyptic number.

1120640 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 1120640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1432080).

1120640 is an abundant number, since it is smaller than the sum of its proper divisors (1743520).

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

1120640 is a wasteful number, since it uses less digits than its factorization.

1120640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1120640 is about 1058.6028528206. The cubic root of 1120640 is about 103.8696592003.

Adding to 1120640 its reverse (460211), we get a palindrome (1580851).

The spelling of 1120640 in words is "one million, one hundred twenty thousand, six hundred forty".