15247042 has 8 divisors (see below), whose sum is σ = 23106636. Its totient is φ = 7544832.

The previous prime is 15247031. The next prime is 15247051. The reversal of 15247042 is 24074251.

It can be written as a sum of positive squares in 2 ways, for example, as 15217801 + 29241 = 3901^2 + 171^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 15246998 and 15247016.

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 3 ways as a sum of consecutive naturals, for example, 39103 + ... + 39490.

Almost surely, 2^15247042 is an apocalyptic number.

15247042 is a deficient number, since it is larger than the sum of its proper divisors (7859594).

15247042 is an equidigital number, since it uses as much as digits as its factorization.

15247042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78692.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 15247042 is about 3904.7460864953. The cubic root of 15247042 is about 247.9677485809.

The spelling of 15247042 in words is "fifteen million, two hundred forty-seven thousand, forty-two".