142204221421 has 8 divisors (see below), whose sum is σ = 142308408960. Its totient is φ = 142100071728.

The previous prime is 142204221413. The next prime is 142204221443. The reversal of 142204221421 is 124122402241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142204221421 - 2³ = 142204221413 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 (142204221491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14690235 + ... + 14699911.

It is an arithmetic number, because the mean of its divisors is an integer number (17788551120).

Almost surely, 2^142204221421 is an apocalyptic number.

It is an amenable number.

142204221421 is a deficient number, since it is larger than the sum of its proper divisors (104187539).

142204221421 is an equidigital number, since it uses as much as digits as its factorization.

142204221421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18923.

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 142204221421 its reverse (124122402241), we get a palindrome (266326623662).

The spelling of 142204221421 in words is "one hundred forty-two billion, two hundred four million, two hundred twenty-one thousand, four hundred twenty-one".