142052144257 has 4 divisors (see below), whose sum is σ = 142055515476. Its totient is φ = 142048773040.

The previous prime is 142052144249. The next prime is 142052144263. The reversal of 142052144257 is 752441250241.

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 112145284161 + 29906860096 = 334881^2 + 172936^2 .

It is a cyclic number.

It is not a de Polignac number, because 142052144257 - 2³ = 142052144249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142052144207) 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, 1621594 + ... + 1706947.

It is an arithmetic number, because the mean of its divisors is an integer number (35513878869).

Almost surely, 2^142052144257 is an apocalyptic number.

It is an amenable number.

142052144257 is a deficient number, since it is larger than the sum of its proper divisors (3371219).

142052144257 is an equidigital number, since it uses as much as digits as its factorization.

142052144257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3371218.

The product of its (nonzero) digits is 89600, while the sum is 37.

Adding to 142052144257 its reverse (752441250241), we get a palindrome (894493394498).

The spelling of 142052144257 in words is "one hundred forty-two billion, fifty-two million, one hundred forty-four thousand, two hundred fifty-seven".