142321007 has 4 divisors (see below), whose sum is σ = 142558416. Its totient is φ = 142083600.

The previous prime is 142320979. The next prime is 142321043. The reversal of 142321007 is 700123241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 700123241 = 109 ⋅6423149.

It is a cyclic number.

It is not a de Polignac number, because 142321007 - 2⁸ = 142320751 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142321007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142321307) 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, 117803 + ... + 119004.

It is an arithmetic number, because the mean of its divisors is an integer number (35639604).

Almost surely, 2^142321007 is an apocalyptic number.

142321007 is a deficient number, since it is larger than the sum of its proper divisors (237409).

142321007 is an equidigital number, since it uses as much as digits as its factorization.

142321007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237408.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 142321007 is about 11929.8368387837. The cubic root of 142321007 is about 522.1031771016.

Adding to 142321007 its reverse (700123241), we get a palindrome (842444248).

The spelling of 142321007 in words is "one hundred forty-two million, three hundred twenty-one thousand, seven".