1204205423 has 4 divisors (see below), whose sum is σ = 1209202368. Its totient is φ = 1199208480.

The previous prime is 1204205419. The next prime is 1204205459. The reversal of 1204205423 is 3245024021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1204205423 - 2² = 1204205419 is a prime.

It is a super-2 number, since 2×1204205423² = 2900221401565217858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204265423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2498111 + ... + 2498592.

It is an arithmetic number, because the mean of its divisors is an integer number (302300592).

Almost surely, 2^1204205423 is an apocalyptic number.

1204205423 is a deficient number, since it is larger than the sum of its proper divisors (4996945).

1204205423 is an equidigital number, since it uses as much as digits as its factorization.

1204205423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4996944.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 1204205423 is about 34701.6631157644. The cubic root of 1204205423 is about 1063.8984909732.

Adding to 1204205423 its reverse (3245024021), we get a palindrome (4449229444).

The spelling of 1204205423 in words is "one billion, two hundred four million, two hundred five thousand, four hundred twenty-three".