15842241 has 12 divisors (see below), whose sum is σ = 23197668. Its totient is φ = 10416384.

The previous prime is 15842231. The next prime is 15842263. The reversal of 15842241 is 14224851.

It can be written as a sum of positive squares in 2 ways, for example, as 9790641 + 6051600 = 3129^2 + 2460^2 .

It is not a de Polignac number, because 15842241 - 2⁹ = 15841729 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (15842221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11400 + ... + 12713.

It is an arithmetic number, because the mean of its divisors is an integer number (1933139).

Almost surely, 2^15842241 is an apocalyptic number.

It is an amenable number.

15842241 is a deficient number, since it is larger than the sum of its proper divisors (7355427).

15842241 is a wasteful number, since it uses less digits than its factorization.

15842241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24192 (or 24189 counting only the distinct ones).

The product of its digits is 2560, while the sum is 27.

The square root of 15842241 is about 3980.2312746874. The cubic root of 15842241 is about 251.1532901726.

The spelling of 15842241 in words is "fifteen million, eight hundred forty-two thousand, two hundred forty-one".