20404511125242 has 8 divisors (see below), whose sum is σ = 40809022250496. Its totient is φ = 6801503708412.

The previous prime is 20404511125123. The next prime is 20404511125261. The reversal of 20404511125242 is 24252111540402.

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

20404511125242 is an admirable number.

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, 1700375927098 + ... + 1700375927109.

It is an arithmetic number, because the mean of its divisors is an integer number (5101127781312).

Almost surely, 2^{20404511125242} is an apocalyptic number.

20404511125242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20404511125242 is a wasteful number, since it uses less digits than its factorization.

20404511125242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3400751854212.

The product of its (nonzero) digits is 25600, while the sum is 33.

Adding to 20404511125242 its reverse (24252111540402), we get a palindrome (44656622665644).

The spelling of 20404511125242 in words is "twenty trillion, four hundred four billion, five hundred eleven million, one hundred twenty-five thousand, two hundred forty-two".