120420143 has 4 divisors (see below), whose sum is σ = 122069808. Its totient is φ = 118770480.

The previous prime is 120420077. The next prime is 120420149. The reversal of 120420143 is 341024021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 120420143 - 2¹² = 120416047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120420149) 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, 824723 + ... + 824868.

It is an arithmetic number, because the mean of its divisors is an integer number (30517452).

Almost surely, 2^120420143 is an apocalyptic number.

120420143 is a deficient number, since it is larger than the sum of its proper divisors (1649665).

120420143 is an equidigital number, since it uses as much as digits as its factorization.

120420143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649664.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 120420143 is about 10973.6112105359. The cubic root of 120420143 is about 493.8173897657.

Adding to 120420143 its reverse (341024021), we get a palindrome (461444164).

The spelling of 120420143 in words is "one hundred twenty million, four hundred twenty thousand, one hundred forty-three".