142967321 has 4 divisors (see below), whose sum is σ = 163391232. Its totient is φ = 122543412.

The previous prime is 142967291. The next prime is 142967323. The reversal of 142967321 is 123769241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 142967321 - 2¹⁰ = 142966297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142967323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10211945 + ... + 10211958.

It is an arithmetic number, because the mean of its divisors is an integer number (40847808).

Almost surely, 2^142967321 is an apocalyptic number.

It is an amenable number.

142967321 is a deficient number, since it is larger than the sum of its proper divisors (20423911).

142967321 is an equidigital number, since it uses as much as digits as its factorization.

142967321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20423910.

The product of its digits is 18144, while the sum is 35.

The square root of 142967321 is about 11956.8942873975. The cubic root of 142967321 is about 522.8923158755.

The spelling of 142967321 in words is "one hundred forty-two million, nine hundred sixty-seven thousand, three hundred twenty-one".