142802665 has 8 divisors (see below), whose sum is σ = 172311048. Its totient is φ = 113610240.

The previous prime is 142802659. The next prime is 142802683. The reversal of 142802665 is 566208241.

It can be written as a sum of positive squares in 4 ways, for example, as 47961 + 142754704 = 219^2 + 11948^2 .

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

It is not a de Polignac number, because 142802665 - 2²⁷ = 8584937 is a prime.

It is a super-2 number, since 2×142802665² = 40785202262204450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142802665.

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, 77992 + ... + 79801.

It is an arithmetic number, because the mean of its divisors is an integer number (21538881).

Almost surely, 2^142802665 is an apocalyptic number.

It is an amenable number.

142802665 is a deficient number, since it is larger than the sum of its proper divisors (29508383).

142802665 is a wasteful number, since it uses less digits than its factorization.

142802665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157979.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 142802665 is about 11950.0069037637. The cubic root of 142802665 is about 522.6914997482.

The spelling of 142802665 in words is "one hundred forty-two million, eight hundred two thousand, six hundred sixty-five".