20424024020242 has 4 divisors (see below), whose sum is σ = 30636036030366. Its totient is φ = 10212012010120.

The previous prime is 20424024020233. The next prime is 20424024020261. The reversal of 20424024020242 is 24202042042402.

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., 14893432358401 + 5530591661841 = 3859201^2 + 2351721^2 .

It is a super-3 number, since 3×20424024020242³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20424024020242.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5106006005059 + ... + 5106006005062.

Almost surely, 2^{20424024020242} is an apocalyptic number.

20424024020242 is a deficient number, since it is larger than the sum of its proper divisors (10212012010124).

20424024020242 is a wasteful number, since it uses less digits than its factorization.

20424024020242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10212012010123.

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 20424024020242 its reverse (24202042042402), we get a palindrome (44626066062644).

The spelling of 20424024020242 in words is "twenty trillion, four hundred twenty-four billion, twenty-four million, twenty thousand, two hundred forty-two".