12420203013242 has 8 divisors (see below), whose sum is σ = 18645663389556. Its totient is φ = 6204981883392.

The previous prime is 12420203013223. The next prime is 12420203013271. The reversal of 12420203013242 is 24231030202421.

It can be written as a sum of positive squares in 2 ways, for example, as 10671649029001 + 1748553984241 = 3266749^2 + 1322329^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12420203013242² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2559808583 + ... + 2559813434.

Almost surely, 2^{12420203013242} is an apocalyptic number.

12420203013242 is a deficient number, since it is larger than the sum of its proper divisors (6225460376314).

12420203013242 is a wasteful number, since it uses less digits than its factorization.

12420203013242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5119623232.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 12420203013242 its reverse (24231030202421), we get a palindrome (36651233215663).

The spelling of 12420203013242 in words is "twelve trillion, four hundred twenty billion, two hundred three million, thirteen thousand, two hundred forty-two".