20213023042 has 16 divisors (see below), whose sum is σ = 32693724000. Its totient is φ = 9341062560.

The previous prime is 20213023009. The next prime is 20213023067. The reversal of 20213023042 is 24032031202.

It is a Harshad number since it is a multiple of its sum of digits (19).

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, 6485292 + ... + 6488407.

It is an arithmetic number, because the mean of its divisors is an integer number (2043357750).

Almost surely, 2^20213023042 is an apocalyptic number.

20213023042 is a deficient number, since it is larger than the sum of its proper divisors (12480700958).

20213023042 is a wasteful number, since it uses less digits than its factorization.

20213023042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12973761.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 20213023042 its reverse (24032031202), we get a palindrome (44245054244).

The spelling of 20213023042 in words is "twenty billion, two hundred thirteen million, twenty-three thousand, forty-two".