15120103 has 4 divisors (see below), whose sum is σ = 15488928. Its totient is φ = 14751280.

The previous prime is 15120101. The next prime is 15120109. The reversal of 15120103 is 30102151.

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 15120103 - 2¹ = 15120101 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 (15120101) 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, 184351 + ... + 184432.

It is an arithmetic number, because the mean of its divisors is an integer number (3872232).

Almost surely, 2^15120103 is an apocalyptic number.

15120103 is a deficient number, since it is larger than the sum of its proper divisors (368825).

15120103 is an equidigital number, since it uses as much as digits as its factorization.

15120103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368824.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 15120103 is about 3888.4576633930. The cubic root of 15120103 is about 247.2776794851.

Adding to 15120103 its reverse (30102151), we get a palindrome (45222254).

The spelling of 15120103 in words is "fifteen million, one hundred twenty thousand, one hundred three".