1204123266 has 64 divisors (see below), whose sum is σ = 2769085440. Its totient is φ = 387452160.

The previous prime is 1204123229. The next prime is 1204123267. The reversal of 1204123266 is 6623214021.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1204123267) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 992076 + ... + 993288.

It is an arithmetic number, because the mean of its divisors is an integer number (43266960).

Almost surely, 2^1204123266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1204123266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1384542720).

1204123266 is an abundant number, since it is smaller than the sum of its proper divisors (1564962174).

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

1204123266 is a wasteful number, since it uses less digits than its factorization.

1204123266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1848 (or 1842 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 1204123266 is about 34700.4793338651. The cubic root of 1204123266 is about 1063.8742955731.

Adding to 1204123266 its reverse (6623214021), we get a palindrome (7827337287).

The spelling of 1204123266 in words is "one billion, two hundred four million, one hundred twenty-three thousand, two hundred sixty-six".