1204020 has 36 divisors (see below), whose sum is σ = 3652740. Its totient is φ = 321024.

The previous prime is 1204019. The next prime is 1204037. The reversal of 1204020 is 204021.

It can be written as a sum of positive squares in 2 ways, for example, as 736164 + 467856 = 858^2 + 684^2 .

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 (9).

It is a junction number, because it is equal to n+sod(n) for n = 1203993 and 1204011.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 3165 + ... + 3524.

It is an arithmetic number, because the mean of its divisors is an integer number (101465).

2^1204020 is an apocalyptic number.

1204020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1204020 is an abundant number, since it is smaller than the sum of its proper divisors (2448720).

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

1204020 is a wasteful number, since it uses less digits than its factorization.

1204020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6704 (or 6699 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 1204020 is about 1097.2784514425. The cubic root of 1204020 is about 106.3843881969.

Adding to 1204020 its reverse (204021), we get a palindrome (1408041).

Subtracting from 1204020 its reverse (204021), we obtain a palindrome (999999).

The spelling of 1204020 in words is "one million, two hundred four thousand, twenty".