1140420 has 48 divisors (see below), whose sum is σ = 3245760. Its totient is φ = 299136.

The previous prime is 1140413. The next prime is 1140421. The reversal of 1140420 is 240411.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1140396 and 1140405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4866 + ... + 5094.

It is an arithmetic number, because the mean of its divisors is an integer number (67620).

2^1140420 is an apocalyptic number.

1140420 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 1140420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1622880).

1140420 is an abundant number, since it is smaller than the sum of its proper divisors (2105340).

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

1140420 is a wasteful number, since it uses less digits than its factorization.

1140420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324 (or 322 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1140420 is about 1067.9044901114. The cubic root of 1140420 is about 104.4772200676.

Adding to 1140420 its reverse (240411), we get a palindrome (1380831).

Subtracting from 1140420 its reverse (240411), we obtain a palindrome (900009).

The spelling of 1140420 in words is "one million, one hundred forty thousand, four hundred twenty".