120001143 has 8 divisors (see below), whose sum is σ = 166958208. Its totient is φ = 76522424.

The previous prime is 120001121. The next prime is 120001153. The reversal of 120001143 is 341100021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120001143 - 2⁵ = 120001111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120001153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 869505 + ... + 869642.

It is an arithmetic number, because the mean of its divisors is an integer number (20869776).

Almost surely, 2^120001143 is an apocalyptic number.

120001143 is a deficient number, since it is larger than the sum of its proper divisors (46957065).

120001143 is a wasteful number, since it uses less digits than its factorization.

120001143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1739173.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 120001143 is about 10954.5033205527. The cubic root of 120001143 is about 493.2439809058.

Adding to 120001143 its reverse (341100021), we get a palindrome (461101164).

The spelling of 120001143 in words is "one hundred twenty million, one thousand, one hundred forty-three".