20431225010042 has 32 divisors (see below), whose sum is σ = 38227388050944. Its totient is φ = 7956395895600.

The previous prime is 20431225009999. The next prime is 20431225010099. The reversal of 20431225010042 is 24001052213402.

It is a junction number, because it is equal to n+sod(n) for n = 20431225009993 and 20431225010020.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31525184 + ... + 32166747.

It is an arithmetic number, because the mean of its divisors is an integer number (1194605876592).

Almost surely, 2^{20431225010042} is an apocalyptic number.

20431225010042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20431225010042 is a deficient number, since it is larger than the sum of its proper divisors (17796163040902).

20431225010042 is a wasteful number, since it uses less digits than its factorization.

20431225010042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63694034.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 20431225010042 its reverse (24001052213402), we get a palindrome (44432277223444).

The spelling of 20431225010042 in words is "twenty trillion, four hundred thirty-one billion, two hundred twenty-five million, ten thousand, forty-two".