15242115 has 32 divisors (see below), whose sum is σ = 29514240. Its totient is φ = 6557184.

The previous prime is 15242093. The next prime is 15242137. The reversal of 15242115 is 51124251.

It is an interprime number because it is at equal distance from previous prime (15242093) and next prime (15242137).

It is not a de Polignac number, because 15242115 - 2⁵ = 15242083 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 15242091 and 15242100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2485 + ... + 6054.

It is an arithmetic number, because the mean of its divisors is an integer number (922320).

Almost surely, 2^15242115 is an apocalyptic number.

15242115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15242115 is a deficient number, since it is larger than the sum of its proper divisors (14272125).

15242115 is a wasteful number, since it uses less digits than its factorization.

15242115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8571.

The product of its digits is 400, while the sum is 21.

The square root of 15242115 is about 3904.1151366219. The cubic root of 15242115 is about 247.9410358865.

Adding to 15242115 its reverse (51124251), we get a palindrome (66366366).

The spelling of 15242115 in words is "fifteen million, two hundred forty-two thousand, one hundred fifteen".