142144330221 has 16 divisors (see below), whose sum is σ = 210590294400. Its totient is φ = 94760141184.

The previous prime is 142144330217. The next prime is 142144330231. The reversal of 142144330221 is 122033441241.

142144330221 is a `hidden beast` number, since 1 + 4 + 2 + 1 + 4 + 433 + 0 + 221 = 666.

142144330221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 142144330221 - 2² = 142144330217 is a prime.

It is a super-2 number, since 2×142144330221² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142144330231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1374880 + ... + 1474646.

It is an arithmetic number, because the mean of its divisors is an integer number (13161893400).

Almost surely, 2^142144330221 is an apocalyptic number.

It is an amenable number.

142144330221 is a deficient number, since it is larger than the sum of its proper divisors (68445964179).

142144330221 is an equidigital number, since it uses as much as digits as its factorization.

142144330221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152545 (or 152539 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 142144330221 its reverse (122033441241), we get a palindrome (264177771462).

The spelling of 142144330221 in words is "one hundred forty-two billion, one hundred forty-four million, three hundred thirty thousand, two hundred twenty-one".