1204020420 has 48 divisors (see below), whose sum is σ = 3373368768. Its totient is φ = 320871040.

The previous prime is 1204020413. The next prime is 1204020437. The reversal of 1204020420 is 240204021.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1204020420.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107275 + ... + 117965.

It is an arithmetic number, because the mean of its divisors is an integer number (70278516).

Almost surely, 2^1204020420 is an apocalyptic number.

1204020420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1204020420 is an abundant number, since it is smaller than the sum of its proper divisors (2169348348).

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

1204020420 is a wasteful number, since it uses less digits than its factorization.

1204020420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12580 (or 12578 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 1204020420 is about 34698.9973918556. The cubic root of 1204020420 is about 1063.8440056700.

Adding to 1204020420 its reverse (240204021), we get a palindrome (1444224441).

The spelling of 1204020420 in words is "one billion, two hundred four million, twenty thousand, four hundred twenty".