20424503142 has 24 divisors (see below), whose sum is σ = 44263968840. Its totient is φ = 6806494080.

The previous prime is 20424503129. The next prime is 20424503147. The reversal of 20424503142 is 24130542402.

20424503142 is a `hidden beast` number, since 204 + 2 + 450 + 3 + 1 + 4 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20424503147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63084 + ... + 211727.

It is an arithmetic number, because the mean of its divisors is an integer number (1844332035).

Almost surely, 2^20424503142 is an apocalyptic number.

20424503142 is an abundant number, since it is smaller than the sum of its proper divisors (23839465698).

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

20424503142 is a wasteful number, since it uses less digits than its factorization.

20424503142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278948 (or 278945 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The spelling of 20424503142 in words is "twenty billion, four hundred twenty-four million, five hundred three thousand, one hundred forty-two".