1140220 has 24 divisors (see below), whose sum is σ = 2447424. Its totient is φ = 446016.

The previous prime is 1140203. The next prime is 1140233. The reversal of 1140220 is 220411.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1140197 and 1140206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334 + ... + 1546.

It is an arithmetic number, because the mean of its divisors is an integer number (101976).

2^1140220 is an apocalyptic number.

1140220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1140220 is an abundant number, since it is smaller than the sum of its proper divisors (1307204).

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

1140220 is a wasteful number, since it uses less digits than its factorization.

1140220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269 (or 1267 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1140220 is about 1067.8108446724. The cubic root of 1140220 is about 104.4711121817.

Adding to 1140220 its reverse (220411), we get a palindrome (1360631).

The spelling of 1140220 in words is "one million, one hundred forty thousand, two hundred twenty".