142020042101 has 4 divisors (see below), whose sum is σ = 162308619552. Its totient is φ = 121731464652.

The previous prime is 142020042079. The next prime is 142020042113. The reversal of 142020042101 is 101240020241.

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, and also an emirpimes, since its reverse is a distinct semiprime: 101240020241 = 4909 ⋅20623349.

It is not a de Polignac number, because 142020042101 - 2⁶ = 142020042037 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142020042101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142020042191) 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, 10144288715 + ... + 10144288728.

It is an arithmetic number, because the mean of its divisors is an integer number (40577154888).

Almost surely, 2^142020042101 is an apocalyptic number.

It is an amenable number.

142020042101 is a deficient number, since it is larger than the sum of its proper divisors (20288577451).

142020042101 is an equidigital number, since it uses as much as digits as its factorization.

142020042101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20288577450.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 142020042101 its reverse (101240020241), we get a palindrome (243260062342).

The spelling of 142020042101 in words is "one hundred forty-two billion, twenty million, forty-two thousand, one hundred one".