20122421342 has 16 divisors (see below), whose sum is σ = 31527606240. Its totient is φ = 9619956192.

The previous prime is 20122421329. The next prime is 20122421441. The reversal of 20122421342 is 24312422102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1678193 + ... + 1690140.

It is an arithmetic number, because the mean of its divisors is an integer number (1970475390).

Almost surely, 2^20122421342 is an apocalyptic number.

20122421342 is a deficient number, since it is larger than the sum of its proper divisors (11405184898).

20122421342 is a wasteful number, since it uses less digits than its factorization.

20122421342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3368467.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 20122421342 its reverse (24312422102), we get a palindrome (44434843444).

The spelling of 20122421342 in words is "twenty billion, one hundred twenty-two million, four hundred twenty-one thousand, three hundred forty-two".