142103140021 has 4 divisors (see below), whose sum is σ = 142108238272. Its totient is φ = 142098041772.

The previous prime is 142103140019. The next prime is 142103140031. The reversal of 142103140021 is 120041301241.

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 142103140021 - 2¹ = 142103140019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142103140031) 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, 2507085 + ... + 2563138.

It is an arithmetic number, because the mean of its divisors is an integer number (35527059568).

Almost surely, 2^142103140021 is an apocalyptic number.

It is an amenable number.

142103140021 is a deficient number, since it is larger than the sum of its proper divisors (5098251).

142103140021 is an equidigital number, since it uses as much as digits as its factorization.

142103140021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5098250.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 142103140021 its reverse (120041301241), we get a palindrome (262144441262).

The spelling of 142103140021 in words is "one hundred forty-two billion, one hundred three million, one hundred forty thousand, twenty-one".