120103155 has 20 divisors (see below), whose sum is σ = 215296752. Its totient is φ = 64054800.

The previous prime is 120103133. The next prime is 120103183. The reversal of 120103155 is 551301021.

It is not a de Polignac number, because 120103155 - 2¹⁰ = 120102131 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 147871 + ... + 148680.

Almost surely, 2^120103155 is an apocalyptic number.

120103155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

120103155 is a deficient number, since it is larger than the sum of its proper divisors (95193597).

120103155 is an equidigital number, since it uses as much as digits as its factorization.

120103155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296568 (or 296559 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 120103155 is about 10959.1584987170. The cubic root of 120103155 is about 493.3837088908.

Adding to 120103155 its reverse (551301021), we get a palindrome (671404176).

The spelling of 120103155 in words is "one hundred twenty million, one hundred three thousand, one hundred fifty-five".