142146665 has 8 divisors (see below), whose sum is σ = 170958600. Its totient is φ = 113462272.

The previous prime is 142146649. The next prime is 142146671. The reversal of 142146665 is 566641241.

It can be written as a sum of positive squares in 4 ways, for example, as 1771561 + 140375104 = 1331^2 + 11848^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142146665 - 2⁴ = 142146649 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29414 + ... + 33903.

It is an arithmetic number, because the mean of its divisors is an integer number (21369825).

Almost surely, 2^142146665 is an apocalyptic number.

It is an amenable number.

142146665 is a deficient number, since it is larger than the sum of its proper divisors (28811935).

142146665 is an equidigital number, since it uses as much as digits as its factorization.

142146665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63771.

The product of its digits is 34560, while the sum is 35.

The square root of 142146665 is about 11922.5276263048. The cubic root of 142146665 is about 521.8898993679.

The spelling of 142146665 in words is "one hundred forty-two million, one hundred forty-six thousand, six hundred sixty-five".