15042947 has 4 divisors (see below), whose sum is σ = 15086400. Its totient is φ = 14999496.

The previous prime is 15042931. The next prime is 15042971. The reversal of 15042947 is 74924051.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74924051 = 173 ⋅433087.

It is a cyclic number.

It is not a de Polignac number, because 15042947 - 2⁴ = 15042931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15042917) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 21203 + ... + 21900.

It is an arithmetic number, because the mean of its divisors is an integer number (3771600).

Almost surely, 2^15042947 is an apocalyptic number.

15042947 is a deficient number, since it is larger than the sum of its proper divisors (43453).

15042947 is an equidigital number, since it uses as much as digits as its factorization.

15042947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43452.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 15042947 is about 3878.5238171242. The cubic root of 15042947 is about 246.8563529579.

Adding to 15042947 its reverse (74924051), we get a palindrome (89966998).

The spelling of 15042947 in words is "fifteen million, forty-two thousand, nine hundred forty-seven".