12400135 has 8 divisors (see below), whose sum is σ = 16232976. Its totient is φ = 9018240.

The previous prime is 12400127. The next prime is 12400169. The reversal of 12400135 is 53100421.

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

It is not a de Polignac number, because 12400135 - 2³ = 12400127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112674 + ... + 112783.

It is an arithmetic number, because the mean of its divisors is an integer number (2029122).

Almost surely, 2^12400135 is an apocalyptic number.

12400135 is a deficient number, since it is larger than the sum of its proper divisors (3832841).

12400135 is a wasteful number, since it uses less digits than its factorization.

12400135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225473.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 12400135 is about 3521.3825409915. The cubic root of 12400135 is about 231.4597454214.

Adding to 12400135 its reverse (53100421), we get a palindrome (65500556).

The spelling of 12400135 in words is "twelve million, four hundred thousand, one hundred thirty-five".