1204243420 has 24 divisors (see below), whose sum is σ = 2532776400. Its totient is φ = 480961152.

The previous prime is 1204243387. The next prime is 1204243421. The reversal of 1204243420 is 243424021.

It is a happy number.

It is a super-2 number, since 2×1204243420² = 2900404429226592800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1204243391 and 1204243400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204243421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32505 + ... + 58864.

It is an arithmetic number, because the mean of its divisors is an integer number (105532350).

Almost surely, 2^1204243420 is an apocalyptic number.

1204243420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1204243420 is an abundant number, since it is smaller than the sum of its proper divisors (1328532980).

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

1204243420 is a wasteful number, since it uses less digits than its factorization.

1204243420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92037 (or 92035 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 1204243420 is about 34702.2105924104. The cubic root of 1204243420 is about 1063.9096807932.

Adding to 1204243420 its reverse (243424021), we get a palindrome (1447667441).

The spelling of 1204243420 in words is "one billion, two hundred four million, two hundred forty-three thousand, four hundred twenty".