120203243 has 4 divisors (see below), whose sum is σ = 127274040. Its totient is φ = 113132448.

The previous prime is 120203233. The next prime is 120203257. The reversal of 120203243 is 342302021.

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 120203243 - 2¹⁸ = 119941099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 7070779 = 120203243 / (1 + 2 + 0 + 2 + 0 + 3 + 2 + 4 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120203203) 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, 3535373 + ... + 3535406.

It is an arithmetic number, because the mean of its divisors is an integer number (31818510).

Almost surely, 2^120203243 is an apocalyptic number.

120203243 is a deficient number, since it is larger than the sum of its proper divisors (7070797).

120203243 is an equidigital number, since it uses as much as digits as its factorization.

120203243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7070796.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 120203243 is about 10963.7239567585. The cubic root of 120203243 is about 493.5207246574.

Adding to 120203243 its reverse (342302021), we get a palindrome (462505264).

The spelling of 120203243 in words is "one hundred twenty million, two hundred three thousand, two hundred forty-three".