12450205424242 has 4 divisors (see below), whose sum is σ = 18675308136366. Its totient is φ = 6225102712120.

The previous prime is 12450205424227. The next prime is 12450205424309. The reversal of 12450205424242 is 24242450205421.

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., 10300254778801 + 2149950645441 = 3209401^2 + 1466271^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3112551356059 + ... + 3112551356062.

Almost surely, 2^{12450205424242} is an apocalyptic number.

12450205424242 is a deficient number, since it is larger than the sum of its proper divisors (6225102712124).

12450205424242 is an equidigital number, since it uses as much as digits as its factorization.

12450205424242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6225102712123.

The product of its (nonzero) digits is 204800, while the sum is 37.

Adding to 12450205424242 its reverse (24242450205421), we get a palindrome (36692655629663).

The spelling of 12450205424242 in words is "twelve trillion, four hundred fifty billion, two hundred five million, four hundred twenty-four thousand, two hundred forty-two".