1220043 has 12 divisors (see below), whose sum is σ = 1788584. Its totient is φ = 739200.

The previous prime is 1220041. The next prime is 1220071. The reversal of 1220043 is 3400221.

It is not a de Polignac number, because 1220043 - 2¹ = 1220041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1318 + ... + 2043.

2^1220043 is an apocalyptic number.

1220043 is a deficient number, since it is larger than the sum of its proper divisors (568541).

1220043 is a wasteful number, since it uses less digits than its factorization.

1220043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3386 (or 3375 counting only the distinct ones).

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

The square root of 1220043 is about 1104.5555667326. Note that the first 4 decimals coincide. The cubic root of 1220043 is about 106.8542283766.

Adding to 1220043 its reverse (3400221), we get a palindrome (4620264).

The spelling of 1220043 in words is "one million, two hundred twenty thousand, forty-three".