142005130221 has 4 divisors (see below), whose sum is σ = 189340173632. Its totient is φ = 94670086812.

The previous prime is 142005130217. The next prime is 142005130249. The reversal of 142005130221 is 122031500241.

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 not a de Polignac number, because 142005130221 - 2² = 142005130217 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 (142005130021) 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, 23667521701 + ... + 23667521706.

It is an arithmetic number, because the mean of its divisors is an integer number (47335043408).

Almost surely, 2^142005130221 is an apocalyptic number.

It is an amenable number.

142005130221 is a deficient number, since it is larger than the sum of its proper divisors (47335043411).

142005130221 is an equidigital number, since it uses as much as digits as its factorization.

142005130221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47335043410.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 142005130221 its reverse (122031500241), we get a palindrome (264036630462).

The spelling of 142005130221 in words is "one hundred forty-two billion, five million, one hundred thirty thousand, two hundred twenty-one".