12401505 has 48 divisors (see below), whose sum is σ = 22800960. Its totient is φ = 6464448.

The previous prime is 12401497. The next prime is 12401507. The reversal of 12401505 is 50510421.

It is not a de Polignac number, because 12401505 - 2³ = 12401497 is a prime.

It is a Curzon 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 47 ways as a sum of consecutive naturals, for example, 71599 + ... + 71771.

It is an arithmetic number, because the mean of its divisors is an integer number (475020).

Almost surely, 2^12401505 is an apocalyptic number.

12401505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12401505 is a deficient number, since it is larger than the sum of its proper divisors (10399455).

12401505 is an equidigital number, since it uses as much as digits as its factorization.

12401505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 12401505 is about 3521.5770614882. The cubic root of 12401505 is about 231.4682692042.

Adding to 12401505 its reverse (50510421), we get a palindrome (62911926).

The spelling of 12401505 in words is "twelve million, four hundred one thousand, five hundred five".