20424142243132 has 24 divisors (see below), whose sum is σ = 37580964043392. Its totient is φ = 9693502618800.

The previous prime is 20424142243123. The next prime is 20424142243171. The reversal of 20424142243132 is 23134224142402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 847322094 + ... + 847346197.

It is an arithmetic number, because the mean of its divisors is an integer number (1565873501808).

Almost surely, 2^{20424142243132} is an apocalyptic number.

It is an amenable number.

20424142243132 is a deficient number, since it is larger than the sum of its proper divisors (17156821800260).

20424142243132 is a wasteful number, since it uses less digits than its factorization.

20424142243132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1694668449 (or 1694668447 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 34.

Adding to 20424142243132 its reverse (23134224142402), we get a palindrome (43558366385534).

The spelling of 20424142243132 in words is "twenty trillion, four hundred twenty-four billion, one hundred forty-two million, two hundred forty-three thousand, one hundred thirty-two".