20122043442 has 32 divisors (see below), whose sum is σ = 44204037120. Its totient is φ = 6078053520.

The previous prime is 20122043411. The next prime is 20122043479. The reversal of 20122043442 is 24434022102.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3834534 + ... + 3839777.

It is an arithmetic number, because the mean of its divisors is an integer number (1381376160).

Almost surely, 2^20122043442 is an apocalyptic number.

20122043442 is an abundant number, since it is smaller than the sum of its proper divisors (24081993678).

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

20122043442 is a wasteful number, since it uses less digits than its factorization.

20122043442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7674358.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 20122043442 its reverse (24434022102), we get a palindrome (44556065544).

The spelling of 20122043442 in words is "twenty billion, one hundred twenty-two million, forty-three thousand, four hundred forty-two".