142021203 has 8 divisors (see below), whose sum is σ = 189445008. Its totient is φ = 94639104.

The previous prime is 142021193. The next prime is 142021211. The reversal of 142021203 is 302120241.

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

It is a de Polignac number, because none of the positive numbers 2^k-142021203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142021283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1350 + ... + 16907.

It is an arithmetic number, because the mean of its divisors is an integer number (23680626).

Almost surely, 2^142021203 is an apocalyptic number.

142021203 is a deficient number, since it is larger than the sum of its proper divisors (47423805).

142021203 is a wasteful number, since it uses less digits than its factorization.

142021203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20853.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 142021203 is about 11917.2649127222. The cubic root of 142021203 is about 521.7363100593.

Adding to 142021203 its reverse (302120241), we get a palindrome (444141444).

The spelling of 142021203 in words is "one hundred forty-two million, twenty-one thousand, two hundred three".