12540735 has 24 divisors (see below), whose sum is σ = 22246224. Its totient is φ = 6531840.

The previous prime is 12540733. The next prime is 12540739. The reversal of 12540735 is 53704521.

It is a happy number.

It is not a de Polignac number, because 12540735 - 2¹ = 12540733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12540699 and 12540708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12540733) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1306 + ... + 5175.

It is an arithmetic number, because the mean of its divisors is an integer number (926926).

Almost surely, 2^12540735 is an apocalyptic number.

12540735 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12540735 is a deficient number, since it is larger than the sum of its proper divisors (9705489).

12540735 is a wasteful number, since it uses less digits than its factorization.

12540735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6535 (or 6532 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 12540735 is about 3541.2900191879. The cubic root of 12540735 is about 232.3312684889.

The spelling of 12540735 in words is "twelve million, five hundred forty thousand, seven hundred thirty-five".