12400245 has 96 divisors (see below), whose sum is σ = 26417664. Its totient is φ = 5299200.

The previous prime is 12400237. The next prime is 12400247. The reversal of 12400245 is 54200421.

It is not a de Polignac number, because 12400245 - 2³ = 12400237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12400247) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 263812 + ... + 263858.

It is an arithmetic number, because the mean of its divisors is an integer number (275184).

Almost surely, 2^12400245 is an apocalyptic number.

12400245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12400245 is an abundant number, since it is smaller than the sum of its proper divisors (14017419).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12400245 is a wasteful number, since it uses less digits than its factorization.

12400245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 12400245 is about 3521.3981598223. The cubic root of 12400245 is about 231.4604298359.

Adding to 12400245 its reverse (54200421), we get a palindrome (66600666).

The spelling of 12400245 in words is "twelve million, four hundred thousand, two hundred forty-five".