142035205421 has 4 divisors (see below), whose sum is σ = 144035701344. Its totient is φ = 140034709500.

The previous prime is 142035205393. The next prime is 142035205439. The reversal of 142035205421 is 124502530241.

142035205421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 124502530241 = 137 ⋅908777593.

It is a cyclic number.

It is not a de Polignac number, because 142035205421 - 2¹⁸ = 142034943277 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 (142035205621) 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 3 ways as a sum of consecutive naturals, for example, 1000247855 + ... + 1000247996.

It is an arithmetic number, because the mean of its divisors is an integer number (36008925336).

Almost surely, 2^142035205421 is an apocalyptic number.

It is an amenable number.

142035205421 is a deficient number, since it is larger than the sum of its proper divisors (2000495923).

142035205421 is an equidigital number, since it uses as much as digits as its factorization.

142035205421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000495922.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 142035205421 its reverse (124502530241), we get a palindrome (266537735662).

The spelling of 142035205421 in words is "one hundred forty-two billion, thirty-five million, two hundred five thousand, four hundred twenty-one".