15242111 has 8 divisors (see below), whose sum is σ = 16032384. Its totient is φ = 14470560.

The previous prime is 15242093. The next prime is 15242137. The reversal of 15242111 is 11124251.

15242111 = 465² + 466² + ... + 526².

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15242111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15242111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15242141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2996 + ... + 6281.

It is an arithmetic number, because the mean of its divisors is an integer number (2004048).

Almost surely, 2^15242111 is an apocalyptic number.

15242111 is a deficient number, since it is larger than the sum of its proper divisors (790273).

15242111 is an equidigital number, since it uses as much as digits as its factorization.

15242111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9361.

The product of its digits is 80, while the sum is 17.

The square root of 15242111 is about 3904.1146243419. The cubic root of 15242111 is about 247.9410141974.

Adding to 15242111 its reverse (11124251), we get a palindrome (26366362).

The spelling of 15242111 in words is "fifteen million, two hundred forty-two thousand, one hundred eleven".