142440163 has 4 divisors (see below), whose sum is σ = 142475920. Its totient is φ = 142404408.

The previous prime is 142440157. The next prime is 142440167. The reversal of 142440163 is 361044241.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142440163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142440167) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 11028 + ... + 20161.

It is an arithmetic number, because the mean of its divisors is an integer number (35618980).

Almost surely, 2^142440163 is an apocalyptic number.

142440163 is a deficient number, since it is larger than the sum of its proper divisors (35757).

142440163 is an equidigital number, since it uses as much as digits as its factorization.

142440163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35756.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 142440163 is about 11934.8298270231. The cubic root of 142440163 is about 522.2488439843.

The spelling of 142440163 in words is "one hundred forty-two million, four hundred forty thousand, one hundred sixty-three".