12450100 has 72 divisors (see below), whose sum is σ = 29760248. Its totient is φ = 4492800.

The previous prime is 12450079. The next prime is 12450131. The reversal of 12450100 is 105421.

It can be written as a sum of positive squares in 12 ways, for example, as 10265616 + 2184484 = 3204^2 + 1478^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79222 + ... + 79378.

Almost surely, 2^12450100 is an apocalyptic number.

12450100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12450100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14880124).

12450100 is an abundant number, since it is smaller than the sum of its proper divisors (17310148).

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

12450100 is a wasteful number, since it uses less digits than its factorization.

12450100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 12450100 is about 3528.4699233520. The cubic root of 12450100 is about 231.7702094528.

Adding to 12450100 its reverse (105421), we get a palindrome (12555521).

The spelling of 12450100 in words is "twelve million, four hundred fifty thousand, one hundred".