12442513450 has 24 divisors (see below), whose sum is σ = 23155130700. Its totient is φ = 4974412800.

The previous prime is 12442513441. The next prime is 12442513453. The reversal of 12442513450 is 5431524421.

It can be written as a sum of positive squares in 6 ways, for example, as 5647973409 + 6794540041 = 75153^2 + 82429^2 .

It is a super-2 number, since 2×12442513450² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12442513453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33610 + ... + 161290.

Almost surely, 2^12442513450 is an apocalyptic number.

12442513450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12442513450 is a deficient number, since it is larger than the sum of its proper divisors (10712617250).

12442513450 is a wasteful number, since it uses less digits than its factorization.

12442513450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129642 (or 129637 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

The spelling of 12442513450 in words is "twelve billion, four hundred forty-two million, five hundred thirteen thousand, four hundred fifty".