15430243 has 2 divisors, whose sum is σ = 15430244. Its totient is φ = 15430242.

The previous prime is 15430213. The next prime is 15430253. The reversal of 15430243 is 34203451.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15430243 - 2²¹ = 13333091 is a prime.

It is not a weakly prime, because it can be changed into another prime (15430213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7715121 + 7715122.

It is an arithmetic number, because the mean of its divisors is an integer number (7715122).

Almost surely, 2^15430243 is an apocalyptic number.

15430243 is a deficient number, since it is larger than the sum of its proper divisors (1).

15430243 is an equidigital number, since it uses as much as digits as its factorization.

15430243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 15430243 is about 3928.1347991127. The cubic root of 15430243 is about 248.9569502410.

Adding to 15430243 its reverse (34203451), we get a palindrome (49633694).

The spelling of 15430243 in words is "fifteen million, four hundred thirty thousand, two hundred forty-three".