1120020 has 48 divisors (see below), whose sum is σ = 3423168. Its totient is φ = 271360.

The previous prime is 1120019. The next prime is 1120051. The reversal of 1120020 is 200211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a junction number, because it is equal to n+sod(n) for n = 1119990 and 1120008.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189 + ... + 1508.

It is an arithmetic number, because the mean of its divisors is an integer number (71316).

2^1120020 is an apocalyptic number.

1120020 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 1120020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1711584).

1120020 is an abundant number, since it is smaller than the sum of its proper divisors (2303148).

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

1120020 is a wasteful number, since it uses less digits than its factorization.

1120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720 (or 1718 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 6.

The square root of 1120020 is about 1058.3099734955. The cubic root of 1120020 is about 103.8505001874.

Adding to 1120020 its reverse (200211), we get a palindrome (1320231).

It can be divided in two parts, 1 and 120020, that added together give a palindrome (120021).

The spelling of 1120020 in words is "one million, one hundred twenty thousand, twenty".