12440300234 has 4 divisors (see below), whose sum is σ = 18660450354. Its totient is φ = 6220150116.

The previous prime is 12440300231. The next prime is 12440300261. The reversal of 12440300234 is 43200304421.

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

It can be written as a sum of positive squares in only one way, i.e., 9081518209 + 3358782025 = 95297^2 + 57955^2 .

It is a super-2 number, since 2×12440300234² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12440300231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3110075057 + ... + 3110075060.

Almost surely, 2^12440300234 is an apocalyptic number.

12440300234 is a deficient number, since it is larger than the sum of its proper divisors (6220150120).

12440300234 is an equidigital number, since it uses as much as digits as its factorization.

12440300234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6220150119.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 12440300234 its reverse (43200304421), we get a palindrome (55640604655).

The spelling of 12440300234 in words is "twelve billion, four hundred forty million, three hundred thousand, two hundred thirty-four".