20042140001 has 4 divisors (see below), whose sum is σ = 21583843092. Its totient is φ = 18500436912.

The previous prime is 20042139989. The next prime is 20042140007. The reversal of 20042140001 is 10004124002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2134347601 + 17907792400 = 46199^2 + 133820^2 .

It is a cyclic number.

It is not a de Polignac number, because 20042140001 - 2⁶ = 20042139937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20042140007) 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, 770851526 + ... + 770851551.

It is an arithmetic number, because the mean of its divisors is an integer number (5395960773).

Almost surely, 2^20042140001 is an apocalyptic number.

It is an amenable number.

20042140001 is a deficient number, since it is larger than the sum of its proper divisors (1541703091).

20042140001 is a wasteful number, since it uses less digits than its factorization.

20042140001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1541703090.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20042140001 its reverse (10004124002), we get a palindrome (30046264003).

The spelling of 20042140001 in words is "twenty billion, forty-two million, one hundred forty thousand, one".