12487122 has 20 divisors (see below), whose sum is σ = 27980766. Its totient is φ = 4162320.

The previous prime is 12487109. The next prime is 12487133. The reversal of 12487122 is 22178421.

It can be written as a sum of positive squares in only one way, i.e., 10439361 + 2047761 = 3231^2 + 1431^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

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 9 ways as a sum of consecutive naturals, for example, 38379 + ... + 38702.

Almost surely, 2^12487122 is an apocalyptic number.

12487122 is an abundant number, since it is smaller than the sum of its proper divisors (15493644).

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

12487122 is an equidigital number, since it uses as much as digits as its factorization.

12487122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77095 (or 77086 counting only the distinct ones).

The product of its digits is 1792, while the sum is 27.

The square root of 12487122 is about 3533.7122123908. The cubic root of 12487122 is about 231.9997151205. Note that the first 3 decimals are identical.

The spelling of 12487122 in words is "twelve million, four hundred eighty-seven thousand, one hundred twenty-two".