12124540 has 24 divisors (see below), whose sum is σ = 25566912. Its totient is φ = 4829760.

The previous prime is 12124537. The next prime is 12124547. The reversal of 12124540 is 4542121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12124547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4302 + ... + 6538.

It is an arithmetic number, because the mean of its divisors is an integer number (1065288).

Almost surely, 2^12124540 is an apocalyptic number.

12124540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12124540 is an abundant number, since it is smaller than the sum of its proper divisors (13442372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12124540 is a wasteful number, since it uses less digits than its factorization.

12124540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2517 (or 2515 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 12124540 is about 3482.0310165190. The cubic root of 12124540 is about 229.7321393332.

Adding to 12124540 its reverse (4542121), we get a palindrome (16666661).

The spelling of 12124540 in words is "twelve million, one hundred twenty-four thousand, five hundred forty".