15242189 has 2 divisors, whose sum is σ = 15242190. Its totient is φ = 15242188.

The previous prime is 15242141. The next prime is 15242207. The reversal of 15242189 is 98124251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8219689 + 7022500 = 2867^2 + 2650^2 .

It is an emirp because it is prime and its reverse (98124251) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15242189 - 2¹⁶ = 15176653 is a prime.

It is a Chen prime.

It is equal to p₉₈₅₃₂₅ and since 15242189 and 985325 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15242089) by changing a digit.

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 as a sum of consecutive naturals, namely, 7621094 + 7621095.

It is an arithmetic number, because the mean of its divisors is an integer number (7621095).

Almost surely, 2^15242189 is an apocalyptic number.

It is an amenable number.

15242189 is a deficient number, since it is larger than the sum of its proper divisors (1).

15242189 is an equidigital number, since it uses as much as digits as its factorization.

15242189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 32.

The square root of 15242189 is about 3904.1246137899. The cubic root of 15242189 is about 247.9414371346.

The spelling of 15242189 in words is "fifteen million, two hundred forty-two thousand, one hundred eighty-nine".