142442203 has 4 divisors (see below), whose sum is σ = 142562008. Its totient is φ = 142322400.

The previous prime is 142442189. The next prime is 142442233. The reversal of 142442203 is 302244241.

It is a happy number.

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-142442203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142442233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58101 + ... + 60502.

It is an arithmetic number, because the mean of its divisors is an integer number (35640502).

Almost surely, 2^142442203 is an apocalyptic number.

142442203 is a deficient number, since it is larger than the sum of its proper divisors (119805).

142442203 is a wasteful number, since it uses less digits than its factorization.

142442203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119804.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 142442203 is about 11934.9152908598. The cubic root of 142442203 is about 522.2513371541.

Adding to 142442203 its reverse (302244241), we get a palindrome (444686444).

The spelling of 142442203 in words is "one hundred forty-two million, four hundred forty-two thousand, two hundred three".