142001347 has 4 divisors (see below), whose sum is σ = 142251480. Its totient is φ = 141751216.

The previous prime is 142001339. The next prime is 142001393. The reversal of 142001347 is 743100241.

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 142001347 - 2³ = 142001339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142001047) 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 3 ways as a sum of consecutive naturals, for example, 124213 + ... + 125350.

It is an arithmetic number, because the mean of its divisors is an integer number (35562870).

Almost surely, 2^142001347 is an apocalyptic number.

142001347 is a deficient number, since it is larger than the sum of its proper divisors (250133).

142001347 is an equidigital number, since it uses as much as digits as its factorization.

142001347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250132.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 142001347 is about 11916.4318065434. The cubic root of 142001347 is about 521.7119942558.

Adding to 142001347 its reverse (743100241), we get a palindrome (885101588).

The spelling of 142001347 in words is "one hundred forty-two million, one thousand, three hundred forty-seven".