12401517 has 8 divisors (see below), whose sum is σ = 17508096. Its totient is φ = 7781312.

The previous prime is 12401507. The next prime is 12401533. The reversal of 12401517 is 71510421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12401517 - 2⁸ = 12401261 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12401493 and 12401502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12401507) 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, 121533 + ... + 121634.

It is an arithmetic number, because the mean of its divisors is an integer number (2188512).

Almost surely, 2^12401517 is an apocalyptic number.

12401517 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12401517 is a deficient number, since it is larger than the sum of its proper divisors (5106579).

12401517 is a wasteful number, since it uses less digits than its factorization.

12401517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243187.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 12401517 is about 3521.5787652699. The cubic root of 12401517 is about 231.4683438623.

Adding to 12401517 its reverse (71510421), we get a palindrome (83911938).

The spelling of 12401517 in words is "twelve million, four hundred one thousand, five hundred seventeen".