142302311 has 8 divisors (see below), whose sum is σ = 149576544. Its totient is φ = 135118720.

The previous prime is 142302283. The next prime is 142302319. The reversal of 142302311 is 113203241.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142302311 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142302311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142302319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19430 + ... + 25731.

It is an arithmetic number, because the mean of its divisors is an integer number (18697068).

Almost surely, 2^142302311 is an apocalyptic number.

142302311 is a deficient number, since it is larger than the sum of its proper divisors (7274233).

142302311 is a wasteful number, since it uses less digits than its factorization.

142302311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45321.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 142302311 is about 11929.0532315017. The cubic root of 142302311 is about 522.0803140713.

Adding to 142302311 its reverse (113203241), we get a palindrome (255505552).

The spelling of 142302311 in words is "one hundred forty-two million, three hundred two thousand, three hundred eleven".