142199965 has 4 divisors (see below), whose sum is σ = 170639964. Its totient is φ = 113759968.

The previous prime is 142199923. The next prime is 142199977. The reversal of 142199965 is 569991241.

It is a happy number.

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 19123129 + 123076836 = 4373^2 + 11094^2 .

It is a cyclic number.

It is not a de Polignac number, because 142199965 - 2²⁷ = 7982237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14219992 + ... + 14220001.

It is an arithmetic number, because the mean of its divisors is an integer number (42659991).

Almost surely, 2^142199965 is an apocalyptic number.

It is an amenable number.

142199965 is a deficient number, since it is larger than the sum of its proper divisors (28439999).

142199965 is an equidigital number, since it uses as much as digits as its factorization.

142199965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28439998.

The product of its digits is 174960, while the sum is 46.

The square root of 142199965 is about 11924.7626810767. The cubic root of 142199965 is about 521.9551213356.

The spelling of 142199965 in words is "one hundred forty-two million, one hundred ninety-nine thousand, nine hundred sixty-five".