7812126 has 60 divisors (see below), whose sum is σ = 20249592. Its totient is φ = 2205144.

The previous prime is 7812121. The next prime is 7812127. The reversal of 7812126 is 6212187.

It is a super-2 number, since 2×7812126² = 122058625279752, which contains 22 as substring.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7812126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7812121) by changing a digit.

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 29 ways as a sum of consecutive naturals, for example, 94081 + ... + 94163.

Almost surely, 2^7812126 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7812126, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10124796).

7812126 is an abundant number, since it is smaller than the sum of its proper divisors (12437466).

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

7812126 is an equidigital number, since it uses as much as digits as its factorization.

7812126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187 (or 95 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 7812126 is about 2795.0180679201. The cubic root of 7812126 is about 198.4219651095.

The spelling of 7812126 in words is "seven million, eight hundred twelve thousand, one hundred twenty-six".