20211342042 has 32 divisors (see below), whose sum is σ = 41775108480. Its totient is φ = 6514618880.

The previous prime is 20211342031. The next prime is 20211342079. The reversal of 20211342042 is 24024311202.

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 in 15 ways as a sum of consecutive naturals, for example, 335742 + ... + 391337.

It is an arithmetic number, because the mean of its divisors is an integer number (1305472140).

Almost surely, 2^20211342042 is an apocalyptic number.

20211342042 is an abundant number, since it is smaller than the sum of its proper divisors (21563766438).

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

20211342042 is a wasteful number, since it uses less digits than its factorization.

20211342042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727238.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 20211342042 its reverse (24024311202), we get a palindrome (44235653244).

The spelling of 20211342042 in words is "twenty billion, two hundred eleven million, three hundred forty-two thousand, forty-two".