15242971 has 4 divisors (see below), whose sum is σ = 15436000. Its totient is φ = 15049944.

The previous prime is 15242957. The next prime is 15242987. The reversal of 15242971 is 17924251.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 15242971 - 2⁹ = 15242459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15242671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96396 + ... + 96553.

It is an arithmetic number, because the mean of its divisors is an integer number (3859000).

Almost surely, 2^15242971 is an apocalyptic number.

15242971 is a deficient number, since it is larger than the sum of its proper divisors (193029).

15242971 is an equidigital number, since it uses as much as digits as its factorization.

15242971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193028.

The product of its digits is 5040, while the sum is 31.

The square root of 15242971 is about 3904.2247629971. The cubic root of 15242971 is about 247.9456772711.

The spelling of 15242971 in words is "fifteen million, two hundred forty-two thousand, nine hundred seventy-one".