20523012242 has 16 divisors (see below), whose sum is σ = 31243605120. Its totient is φ = 10108814112.

The previous prime is 20523012229. The next prime is 20523012253. The reversal of 20523012242 is 24221032502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38723 + ... + 206265.

It is an arithmetic number, because the mean of its divisors is an integer number (1952725320).

Almost surely, 2^20523012242 is an apocalyptic number.

20523012242 is a deficient number, since it is larger than the sum of its proper divisors (10720592878).

20523012242 is a wasteful number, since it uses less digits than its factorization.

20523012242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168457.

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 20523012242 its reverse (24221032502), we get a palindrome (44744044744).

The spelling of 20523012242 in words is "twenty billion, five hundred twenty-three million, twelve thousand, two hundred forty-two".