20435335142 has 4 divisors (see below), whose sum is σ = 30653002716. Its totient is φ = 10217667570.

The previous prime is 20435335127. The next prime is 20435335153. The reversal of 20435335142 is 24153353402.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 20435335099 and 20435335108.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5108833784 + ... + 5108833787.

It is an arithmetic number, because the mean of its divisors is an integer number (7663250679).

Almost surely, 2^20435335142 is an apocalyptic number.

20435335142 is a deficient number, since it is larger than the sum of its proper divisors (10217667574).

20435335142 is a wasteful number, since it uses less digits than its factorization.

20435335142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10217667573.

The product of its (nonzero) digits is 43200, while the sum is 32.

Adding to 20435335142 its reverse (24153353402), we get a palindrome (44588688544).

The spelling of 20435335142 in words is "twenty billion, four hundred thirty-five million, three hundred thirty-five thousand, one hundred forty-two".