1232412505 has 4 divisors (see below), whose sum is σ = 1478895012. Its totient is φ = 985930000.

The previous prime is 1232412479. The next prime is 1232412509. The reversal of 1232412505 is 5052142321.

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

It can be written as a sum of positive squares in 2 ways, for example, as 903062601 + 329349904 = 30051^2 + 18148^2 .

It is not a de Polignac number, because 1232412505 - 2²¹ = 1230315353 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 1232412505.

It is not an unprimeable number, because it can be changed into a prime (1232412509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123241246 + ... + 123241255.

It is an arithmetic number, because the mean of its divisors is an integer number (369723753).

Almost surely, 2^1232412505 is an apocalyptic number.

It is an amenable number.

1232412505 is a deficient number, since it is larger than the sum of its proper divisors (246482507).

1232412505 is an equidigital number, since it uses as much as digits as its factorization.

1232412505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246482506.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1232412505 is about 35105.7332212276. The cubic root of 1232412505 is about 1072.1413155692.

Adding to 1232412505 its reverse (5052142321), we get a palindrome (6284554826).

The spelling of 1232412505 in words is "one billion, two hundred thirty-two million, four hundred twelve thousand, five hundred five".