20420022442 has 8 divisors (see below), whose sum is σ = 30764968416. Its totient is φ = 10165032972.

The previous prime is 20420022391. The next prime is 20420022451. The reversal of 20420022442 is 24422002402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22488558 + ... + 22489465.

It is an arithmetic number, because the mean of its divisors is an integer number (3845621052).

Almost surely, 2^20420022442 is an apocalyptic number.

20420022442 is a deficient number, since it is larger than the sum of its proper divisors (10344945974).

20420022442 is a wasteful number, since it uses less digits than its factorization.

20420022442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44978252.

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 20420022442 its reverse (24422002402), we get a palindrome (44842024844).

The spelling of 20420022442 in words is "twenty billion, four hundred twenty million, twenty-two thousand, four hundred forty-two".