1043220 has 24 divisors (see below), whose sum is σ = 2921184. Its totient is φ = 278176.

The previous prime is 1043213. The next prime is 1043221. The reversal of 1043220 is 223401.

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 = 1043196 and 1043205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1043221) 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, 8634 + ... + 8753.

It is an arithmetic number, because the mean of its divisors is an integer number (121716).

2^1043220 is an apocalyptic number.

1043220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1043220 is an abundant number, since it is smaller than the sum of its proper divisors (1877964).

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

1043220 is a wasteful number, since it uses less digits than its factorization.

1043220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17399 (or 17397 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 1043220 is about 1021.3814174930. The cubic root of 1043220 is about 101.4203958988.

Adding to 1043220 its reverse (223401), we get a palindrome (1266621).

The spelling of 1043220 in words is "one million, forty-three thousand, two hundred twenty".