15242123 has 16 divisors (see below), whose sum is σ = 18036480. Its totient is φ = 12744864.

The previous prime is 15242093. The next prime is 15242137. The reversal of 15242123 is 32124251.

15242123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 15242123 - 2⁸ = 15241867 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15242095 and 15242104.

It is not an unprimeable number, because it can be changed into a prime (15242923) 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, 4340 + ... + 7022.

It is an arithmetic number, because the mean of its divisors is an integer number (1127280).

Almost surely, 2^15242123 is an apocalyptic number.

15242123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

15242123 is a deficient number, since it is larger than the sum of its proper divisors (2794357).

15242123 is a wasteful number, since it uses less digits than its factorization.

15242123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2738.

The product of its digits is 480, while the sum is 20.

The square root of 15242123 is about 3904.1161611817. The cubic root of 15242123 is about 247.9410792647.

Adding to 15242123 its reverse (32124251), we get a palindrome (47366374).

The spelling of 15242123 in words is "fifteen million, two hundred forty-two thousand, one hundred twenty-three".