142143411 has 4 divisors (see below), whose sum is σ = 189524552. Its totient is φ = 94762272.

The previous prime is 142143377. The next prime is 142143431. The reversal of 142143411 is 114341241.

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

It is not a de Polignac number, because 142143411 - 2¹⁹ = 141619123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142143431) 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, 23690566 + ... + 23690571.

It is an arithmetic number, because the mean of its divisors is an integer number (47381138).

Almost surely, 2^142143411 is an apocalyptic number.

142143411 is a deficient number, since it is larger than the sum of its proper divisors (47381141).

142143411 is an equidigital number, since it uses as much as digits as its factorization.

142143411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47381140.

The product of its digits is 384, while the sum is 21.

The square root of 142143411 is about 11922.3911611723. The cubic root of 142143411 is about 521.8859169959.

Adding to 142143411 its reverse (114341241), we get a palindrome (256484652).

The spelling of 142143411 in words is "one hundred forty-two million, one hundred forty-three thousand, four hundred eleven".