12340445 has 8 divisors (see below), whose sum is σ = 15947736. Its totient is φ = 9112896.

The previous prime is 12340429. The next prime is 12340459. The reversal of 12340445 is 54404321.

It can be written as a sum of positive squares in 4 ways, for example, as 657721 + 11682724 = 811^2 + 3418^2 .

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

It is not a de Polignac number, because 12340445 - 2⁴ = 12340429 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 12340445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94862 + ... + 94991.

It is an arithmetic number, because the mean of its divisors is an integer number (1993467).

Almost surely, 2^12340445 is an apocalyptic number.

It is an amenable number.

12340445 is a deficient number, since it is larger than the sum of its proper divisors (3607291).

12340445 is a wasteful number, since it uses less digits than its factorization.

12340445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189871.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 12340445 is about 3512.8969526589. The cubic root of 12340445 is about 231.0877586136.

Adding to 12340445 its reverse (54404321), we get a palindrome (66744766).

The spelling of 12340445 in words is "twelve million, three hundred forty thousand, four hundred forty-five".