12504261 has 72 divisors (see below), whose sum is σ = 23046240. Its totient is φ = 5987520.

The previous prime is 12504259. The next prime is 12504263. The reversal of 12504261 is 16240521.

It is an interprime number because it is at equal distance from previous prime (12504259) and next prime (12504263).

It is not a de Polignac number, because 12504261 - 2¹ = 12504259 is a prime.

It is a super-2 number, since 2×12504261² = 312713086312242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12504263) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 337935 + ... + 337971.

Almost surely, 2^12504261 is an apocalyptic number.

12504261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12504261 is a deficient number, since it is larger than the sum of its proper divisors (10541979).

12504261 is a wasteful number, since it uses less digits than its factorization.

12504261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 12504261 is about 3536.1364509872. The cubic root of 12504261 is about 232.1058090982.

Adding to 12504261 its reverse (16240521), we get a palindrome (28744782).

The spelling of 12504261 in words is "twelve million, five hundred four thousand, two hundred sixty-one".