142221605453 has 4 divisors (see below), whose sum is σ = 142223174940. Its totient is φ = 142220035968.

The previous prime is 142221605441. The next prime is 142221605459. The reversal of 142221605453 is 354506122241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14227241284 + 127994364169 = 119278^2 + 357763^2 .

It is a cyclic number.

It is not a de Polignac number, because 142221605453 - 2⁴ = 142221605437 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 (142221605459) 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 3 ways as a sum of consecutive naturals, for example, 639908 + ... + 833021.

It is an arithmetic number, because the mean of its divisors is an integer number (35555793735).

Almost surely, 2^142221605453 is an apocalyptic number.

It is an amenable number.

142221605453 is a deficient number, since it is larger than the sum of its proper divisors (1569487).

142221605453 is an equidigital number, since it uses as much as digits as its factorization.

142221605453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1569486.

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 142221605453 its reverse (354506122241), we get a palindrome (496727727694).

The spelling of 142221605453 in words is "one hundred forty-two billion, two hundred twenty-one million, six hundred five thousand, four hundred fifty-three".