120143243 has 16 divisors (see below), whose sum is σ = 134894592. Its totient is φ = 106056000.

The previous prime is 120143239. The next prime is 120143249. The reversal of 120143243 is 342341021.

It is a cyclic number.

It is not a de Polignac number, because 120143243 - 2² = 120143239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120143249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121730 + ... + 122712.

It is an arithmetic number, because the mean of its divisors is an integer number (8430912).

Almost surely, 2^120143243 is an apocalyptic number.

120143243 is a deficient number, since it is larger than the sum of its proper divisors (14751349).

120143243 is a wasteful number, since it uses less digits than its factorization.

120143243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 120143243 is about 10960.9873186680. The cubic root of 120143243 is about 493.4385966134.

Adding to 120143243 its reverse (342341021), we get a palindrome (462484264).

It can be divided in two parts, 1201 and 43243, that added together give a palindrome (44444).

The spelling of 120143243 in words is "one hundred twenty million, one hundred forty-three thousand, two hundred forty-three".