10242409 has 8 divisors (see below), whose sum is σ = 10513800. Its totient is φ = 9974016.

The previous prime is 10242391. The next prime is 10242437. The reversal of 10242409 is 90424201.

It can be written as a sum of positive squares in 4 ways, for example, as 3790809 + 6451600 = 1947^2 + 2540^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 10242409 - 2¹¹ = 10240361 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10242409.

It is not an unprimeable number, because it can be changed into a prime (10242439) 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 7 ways as a sum of consecutive naturals, for example, 7249 + ... + 8545.

It is an arithmetic number, because the mean of its divisors is an integer number (1314225).

Almost surely, 2^10242409 is an apocalyptic number.

It is an amenable number.

10242409 is a deficient number, since it is larger than the sum of its proper divisors (271391).

10242409 is a wasteful number, since it uses less digits than its factorization.

10242409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1499.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 10242409 is about 3200.3763841148. The cubic root of 10242409 is about 217.1704367217.

The spelling of 10242409 in words is "ten million, two hundred forty-two thousand, four hundred nine".