12402500 has 90 divisors (see below), whose sum is σ = 30538662. Its totient is φ = 4400000.

The previous prime is 12402499. The next prime is 12402527. The reversal of 12402500 is 520421.

It can be written as a sum of positive squares in 5 ways, for example, as 8305924 + 4096576 = 2882^2 + 2024^2 .

It is a super-3 number, since 3×12402500³ (a number of 22 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (14) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 302480 + ... + 302520.

Almost surely, 2^12402500 is an apocalyptic number.

12402500 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 12402500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15269331).

12402500 is an abundant number, since it is smaller than the sum of its proper divisors (18136162).

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

12402500 is a wasteful number, since it uses less digits than its factorization.

12402500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 12402500 is about 3521.7183305881. The cubic root of 12402500 is about 231.4744594413.

Adding to 12402500 its reverse (520421), we get a palindrome (12922921).

The spelling of 12402500 in words is "twelve million, four hundred two thousand, five hundred".