142071754666 has 4 divisors (see below), whose sum is σ = 213107632002. Its totient is φ = 71035877332.

The previous prime is 142071754651. The next prime is 142071754729. The reversal of 142071754666 is 666457170241.

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

It can be written as a sum of positive squares in only one way, i.e., 122853755025 + 19217999641 = 350505^2 + 138629^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 35517938665 + ... + 35517938668.

Almost surely, 2^142071754666 is an apocalyptic number.

142071754666 is a deficient number, since it is larger than the sum of its proper divisors (71035877336).

142071754666 is an equidigital number, since it uses as much as digits as its factorization.

142071754666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71035877335.

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 142071754666 in words is "one hundred forty-two billion, seventy-one million, seven hundred fifty-four thousand, six hundred sixty-six".