1116420 has 48 divisors (see below), whose sum is σ = 3265920. Its totient is φ = 284416.

The previous prime is 1116419. The next prime is 1116431. The reversal of 1116420 is 246111.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1116420.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 976 + ... + 1784.

It is an arithmetic number, because the mean of its divisors is an integer number (68040).

2^1116420 is an apocalyptic number.

1116420 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 1116420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1632960).

1116420 is an abundant number, since it is smaller than the sum of its proper divisors (2149500).

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

1116420 is a wasteful number, since it uses less digits than its factorization.

1116420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844 (or 842 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1116420 is about 1056.6077796420. The cubic root of 1116420 is about 103.7391143560.

The spelling of 1116420 in words is "one million, one hundred sixteen thousand, four hundred twenty".