1204431342421 has 2 divisors, whose sum is σ = 1204431342422. Its totient is φ = 1204431342420.

The previous prime is 1204431342407. The next prime is 1204431342479. The reversal of 1204431342421 is 1242431344021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1091421073521 + 113010268900 = 1044711^2 + 336170^2 .

It is a cyclic number.

It is not a de Polignac number, because 1204431342421 - 2²⁹ = 1203894471509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1205431342421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602215671210 + 602215671211.

It is an arithmetic number, because the mean of its divisors is an integer number (602215671211).

Almost surely, 2^{1204431342421} is an apocalyptic number.

It is an amenable number.

1204431342421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1204431342421 is an equidigital number, since it uses as much as digits as its factorization.

1204431342421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 1204431342421 its reverse (1242431344021), we get a palindrome (2446862686442).

The spelling of 1204431342421 in words is "one trillion, two hundred four billion, four hundred thirty-one million, three hundred forty-two thousand, four hundred twenty-one".