1121020 has 24 divisors (see below), whose sum is σ = 2457504. Its totient is φ = 428736.

The previous prime is 1121017. The next prime is 1121023. The reversal of 1121020 is 201211.

It is an interprime number because it is at equal distance from previous prime (1121017) and next prime (1121023).

It is a junction number, because it is equal to n+sod(n) for n = 1120994 and 1121012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 759 + ... + 1678.

It is an arithmetic number, because the mean of its divisors is an integer number (102396).

2^1121020 is an apocalyptic number.

1121020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121020 is an abundant number, since it is smaller than the sum of its proper divisors (1336484).

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

1121020 is a wasteful number, since it uses less digits than its factorization.

1121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2469 (or 2467 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 1121020 is about 1058.7823194595. The cubic root of 1121020 is about 103.8813983286.

Adding to 1121020 its reverse (201211), we get a palindrome (1322231).

The spelling of 1121020 in words is "one million, one hundred twenty-one thousand, twenty".