20020042424 has 8 divisors (see below), whose sum is σ = 37537579560. Its totient is φ = 10010021208.

The previous prime is 20020042391. The next prime is 20020042453. The reversal of 20020042424 is 42424002002.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 20020042396 and 20020042405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1251252644 + ... + 1251252659.

It is an arithmetic number, because the mean of its divisors is an integer number (4692197445).

Almost surely, 2^20020042424 is an apocalyptic number.

It is an amenable number.

20020042424 is a deficient number, since it is larger than the sum of its proper divisors (17517537136).

20020042424 is a wasteful number, since it uses less digits than its factorization.

20020042424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2502505309 (or 2502505305 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 20020042424 its reverse (42424002002), we get a palindrome (62444044426).

The spelling of 20020042424 in words is "twenty billion, twenty million, forty-two thousand, four hundred twenty-four".