1182420 has 36 divisors (see below), whose sum is σ = 3587220. Its totient is φ = 315264.

The previous prime is 1182413. The next prime is 1182421. The reversal of 1182420 is 242811.

It can be written as a sum of positive squares in 2 ways, for example, as 777924 + 404496 = 882^2 + 636^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1182393 and 1182402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1182421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3105 + ... + 3464.

It is an arithmetic number, because the mean of its divisors is an integer number (99645).

2^1182420 is an apocalyptic number.

1182420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1182420 is an abundant number, since it is smaller than the sum of its proper divisors (2404800).

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

1182420 is a wasteful number, since it uses less digits than its factorization.

1182420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6584 (or 6579 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 1182420 is about 1087.3913738852. The cubic root of 1182420 is about 105.7443703725.

The spelling of 1182420 in words is "one million, one hundred eighty-two thousand, four hundred twenty".