142005001 has 12 divisors (see below), whose sum is σ = 149119488. Its totient is φ = 135166032.

The previous prime is 142004987. The next prime is 142005037. The reversal of 142005001 is 100500241.

It is not a de Polignac number, because 142005001 - 2⁵ = 142004969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142008001) 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 11 ways as a sum of consecutive naturals, for example, 63240 + ... + 65446.

It is an arithmetic number, because the mean of its divisors is an integer number (12426624).

Almost surely, 2^142005001 is an apocalyptic number.

It is an amenable number.

142005001 is a deficient number, since it is larger than the sum of its proper divisors (7114487).

142005001 is an equidigital number, since it uses as much as digits as its factorization.

142005001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2328 (or 2291 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 142005001 is about 11916.5851232641. The cubic root of 142005001 is about 521.7164691412.

Adding to 142005001 its reverse (100500241), we get a palindrome (242505242).

The spelling of 142005001 in words is "one hundred forty-two million, five thousand, one".