1144420 has 12 divisors (see below), whose sum is σ = 2403324. Its totient is φ = 457760.

The previous prime is 1144417. The next prime is 1144439. The reversal of 1144420 is 244411.

It can be written as a sum of positive squares in 2 ways, for example, as 876096 + 268324 = 936^2 + 518^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1144394 and 1144403.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28591 + ... + 28630.

It is an arithmetic number, because the mean of its divisors is an integer number (200277).

2^1144420 is an apocalyptic number.

1144420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1144420 is an abundant number, since it is smaller than the sum of its proper divisors (1258904).

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

1144420 is a wasteful number, since it uses less digits than its factorization.

1144420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57230 (or 57228 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 1144420 is about 1069.7756774203. The cubic root of 1144420 is about 104.5992281078.

Adding to 1144420 its reverse (244411), we get a palindrome (1388831).

Subtracting from 1144420 its reverse (244411), we obtain a palindrome (900009).

The spelling of 1144420 in words is "one million, one hundred forty-four thousand, four hundred twenty".