12507420 has 24 divisors (see below), whose sum is σ = 35020944. Its totient is φ = 3335296.

The previous prime is 12507413. The next prime is 12507421. The reversal of 12507420 is 2470521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12507421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104169 + ... + 104288.

It is an arithmetic number, because the mean of its divisors is an integer number (1459206).

Almost surely, 2^12507420 is an apocalyptic number.

12507420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12507420 is an abundant number, since it is smaller than the sum of its proper divisors (22513524).

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

12507420 is a wasteful number, since it uses less digits than its factorization.

12507420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208469 (or 208467 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 12507420 is about 3536.5830967192. The cubic root of 12507420 is about 232.1253533830.

Adding to 12507420 its reverse (2470521), we get a palindrome (14977941).

The spelling of 12507420 in words is "twelve million, five hundred seven thousand, four hundred twenty".