12102740 has 24 divisors (see below), whose sum is σ = 27371400. Its totient is φ = 4468608.

The previous prime is 12102733. The next prime is 12102751. The reversal of 12102740 is 4720121.

It can be written as a sum of positive squares in 4 ways, for example, as 2155024 + 9947716 = 1468^2 + 3154^2 .

It is a congruent number.

It is an unprimeable number.

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, 23015 + ... + 23534.

It is an arithmetic number, because the mean of its divisors is an integer number (1140475).

Almost surely, 2^12102740 is an apocalyptic number.

12102740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12102740 is an abundant number, since it is smaller than the sum of its proper divisors (15268660).

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

12102740 is a wasteful number, since it uses less digits than its factorization.

12102740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46571 (or 46569 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 12102740 is about 3478.8992512000. The cubic root of 12102740 is about 229.5943701145.

Adding to 12102740 its reverse (4720121), we get a palindrome (16822861).

The spelling of 12102740 in words is "twelve million, one hundred two thousand, seven hundred forty".