1204003421 has 8 divisors (see below), whose sum is σ = 1256817624. Its totient is φ = 1152256320.

The previous prime is 1204003373. The next prime is 1204003441. The reversal of 1204003421 is 1243004021.

It can be written as a sum of positive squares in 4 ways, for example, as 80748196 + 1123255225 = 8986^2 + 33515^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1204003421 - 2¹⁸ = 1203741277 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1204003421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204003441) 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, 264470 + ... + 268983.

It is an arithmetic number, because the mean of its divisors is an integer number (157102203).

Almost surely, 2^1204003421 is an apocalyptic number.

It is an amenable number.

1204003421 is a deficient number, since it is larger than the sum of its proper divisors (52814203).

1204003421 is an equidigital number, since it uses as much as digits as its factorization.

1204003421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533551.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1204003421 is about 34698.7524415504. The cubic root of 1204003421 is about 1063.8389990081.

Adding to 1204003421 its reverse (1243004021), we get a palindrome (2447007442).

The spelling of 1204003421 in words is "one billion, two hundred four million, three thousand, four hundred twenty-one".