1141220 has 24 divisors (see below), whose sum is σ = 2454144. Its totient is φ = 445536.

The previous prime is 1141219. The next prime is 1141223. The reversal of 1141220 is 221411.

It is not an unprimeable number, because it can be changed into a prime (1141223) 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, 197 + ... + 1523.

It is an arithmetic number, because the mean of its divisors is an integer number (102256).

2^1141220 is an apocalyptic number.

1141220 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 1141220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1227072).

1141220 is an abundant number, since it is smaller than the sum of its proper divisors (1312924).

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

1141220 is a wasteful number, since it uses less digits than its factorization.

1141220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379 (or 1377 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1141220 is about 1068.2789897775. The cubic root of 1141220 is about 104.5016444725.

Adding to 1141220 its reverse (221411), we get a palindrome (1362631).

The spelling of 1141220 in words is "one million, one hundred forty-one thousand, two hundred twenty".