1166420 has 12 divisors (see below), whose sum is σ = 2449524. Its totient is φ = 466560.

The previous prime is 1166413. The next prime is 1166441. The reversal of 1166420 is 246611.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 158404 + 1008016 = 398^2 + 1004^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 58321 = 1166420 / (1 + 1 + 6 + 6 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 1166392 and 1166401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29141 + ... + 29180.

It is an arithmetic number, because the mean of its divisors is an integer number (204127).

2^1166420 is an apocalyptic number.

1166420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1166420 is an abundant number, since it is smaller than the sum of its proper divisors (1283104).

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

1166420 is a wasteful number, since it uses less digits than its factorization.

1166420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58330 (or 58328 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1166420 is about 1080.0092592196. The cubic root of 1166420 is about 105.2652402220.

Subtracting from 1166420 its sum of digits (20), we obtain a square (1166400 = 1080²).

The spelling of 1166420 in words is "one million, one hundred sixty-six thousand, four hundred twenty".