1042220 has 36 divisors (see below), whose sum is σ = 2315712. Its totient is φ = 393600.

The previous prime is 1042211. The next prime is 1042241. The reversal of 1042220 is 222401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25400 + ... + 25440.

2^1042220 is an apocalyptic number.

1042220 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 1042220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1157856).

1042220 is an abundant number, since it is smaller than the sum of its proper divisors (1273492).

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

1042220 is a wasteful number, since it uses less digits than its factorization.

1042220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122 (or 79 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 1042220 is about 1020.8917670351. The cubic root of 1042220 is about 101.3879793362.

Adding to 1042220 its reverse (222401), we get a palindrome (1264621).

The spelling of 1042220 in words is "one million, forty-two thousand, two hundred twenty".