142020143 has 4 divisors (see below), whose sum is σ = 142060368. Its totient is φ = 141979920.

The previous prime is 142020119. The next prime is 142020149. The reversal of 142020143 is 341020241.

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

It is a cyclic number.

It is not a de Polignac number, because 142020143 - 2¹² = 142016047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142020149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14246 + ... + 22067.

It is an arithmetic number, because the mean of its divisors is an integer number (35515092).

Almost surely, 2^142020143 is an apocalyptic number.

142020143 is a deficient number, since it is larger than the sum of its proper divisors (40225).

142020143 is an equidigital number, since it uses as much as digits as its factorization.

142020143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40224.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 142020143 is about 11917.2204393474. The cubic root of 142020143 is about 521.7350120328.

Adding to 142020143 its reverse (341020241), we get a palindrome (483040384).

The spelling of 142020143 in words is "one hundred forty-two million, twenty thousand, one hundred forty-three".