120143321 has 4 divisors (see below), whose sum is σ = 124018944. Its totient is φ = 116267700.

The previous prime is 120143311. The next prime is 120143347. The reversal of 120143321 is 123341021.

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, and also an emirpimes, since its reverse is a distinct semiprime: 123341021 = 109 ⋅1131569.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120143321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 120143321.

It is not an unprimeable number, because it can be changed into a prime (120143311) 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, 1937765 + ... + 1937826.

It is an arithmetic number, because the mean of its divisors is an integer number (31004736).

Almost surely, 2^120143321 is an apocalyptic number.

It is an amenable number.

120143321 is a deficient number, since it is larger than the sum of its proper divisors (3875623).

120143321 is an equidigital number, since it uses as much as digits as its factorization.

120143321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3875622.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 120143321 is about 10960.9908767410. The cubic root of 120143321 is about 493.4387033976.

Adding to 120143321 its reverse (123341021), we get a palindrome (243484342).

The spelling of 120143321 in words is "one hundred twenty million, one hundred forty-three thousand, three hundred twenty-one".