142143001 has 32 divisors (see below), whose sum is σ = 202099968. Its totient is φ = 96215040.

The previous prime is 142142989. The next prime is 142143017. The reversal of 142143001 is 100341241.

142143001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 142143001 - 2⁵ = 142142969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142143601) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12841 + ... + 21193.

It is an arithmetic number, because the mean of its divisors is an integer number (6315624).

Almost surely, 2^142143001 is an apocalyptic number.

142143001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

142143001 is a deficient number, since it is larger than the sum of its proper divisors (59956967).

142143001 is a wasteful number, since it uses less digits than its factorization.

142143001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8401.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 142143001 is about 11922.3739666226. The cubic root of 142143001 is about 521.8854152176.

Adding to 142143001 its reverse (100341241), we get a palindrome (242484242).

The spelling of 142143001 in words is "one hundred forty-two million, one hundred forty-three thousand, one".