142266757321 has 4 divisors (see below), whose sum is σ = 153210354052. Its totient is φ = 131323160592.

The previous prime is 142266757307. The next prime is 142266757327. The reversal of 142266757321 is 123757662241.

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 16763775625 + 125502981696 = 129475^2 + 354264^2 .

It is not a de Polignac number, because 142266757321 - 2⁹ = 142266756809 is a prime.

It is a super-3 number, since 3×142266757321³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142266757327) 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, 5471798346 + ... + 5471798371.

It is an arithmetic number, because the mean of its divisors is an integer number (38302588513).

Almost surely, 2^142266757321 is an apocalyptic number.

It is an amenable number.

142266757321 is a deficient number, since it is larger than the sum of its proper divisors (10943596731).

142266757321 is a wasteful number, since it uses less digits than its factorization.

142266757321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10943596730.

The product of its digits is 846720, while the sum is 46.

The spelling of 142266757321 in words is "one hundred forty-two billion, two hundred sixty-six million, seven hundred fifty-seven thousand, three hundred twenty-one".