20442140201 has 4 divisors (see below), whose sum is σ = 23362445952. Its totient is φ = 17521834452.

The previous prime is 20442140171. The next prime is 20442140203. The reversal of 20442140201 is 10204124402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20442140201 - 2⁶ = 20442140137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20442140203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1460152865 + ... + 1460152878.

It is an arithmetic number, because the mean of its divisors is an integer number (5840611488).

Almost surely, 2^20442140201 is an apocalyptic number.

It is an amenable number.

20442140201 is a deficient number, since it is larger than the sum of its proper divisors (2920305751).

20442140201 is an equidigital number, since it uses as much as digits as its factorization.

20442140201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2920305750.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 20442140201 its reverse (10204124402), we get a palindrome (30646264603).

The spelling of 20442140201 in words is "twenty billion, four hundred forty-two million, one hundred forty thousand, two hundred one".