1204214321 has 8 divisors (see below), whose sum is σ = 1266927144. Its totient is φ = 1143089280.

The previous prime is 1204214309. The next prime is 1204214339. The reversal of 1204214321 is 1234124021.

It can be written as a sum of positive squares in 4 ways, for example, as 307511296 + 896703025 = 17536^2 + 29945^2 .

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 1204214321 - 2³⁰ = 130472497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1204214293 and 1204214302.

It is not an unprimeable number, because it can be changed into a prime (1204294321) 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, 395390 + ... + 398423.

It is an arithmetic number, because the mean of its divisors is an integer number (158365893).

Almost surely, 2^1204214321 is an apocalyptic number.

It is an amenable number.

1204214321 is a deficient number, since it is larger than the sum of its proper divisors (62712823).

1204214321 is an equidigital number, since it uses as much as digits as its factorization.

1204214321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793891.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1204214321 is about 34701.7913226392. The cubic root of 1204214321 is about 1063.9011113859.

Adding to 1204214321 its reverse (1234124021), we get a palindrome (2438338342).

The spelling of 1204214321 in words is "one billion, two hundred four million, two hundred fourteen thousand, three hundred twenty-one".