4126681 has 4 divisors (see below), whose sum is σ = 4444132. Its totient is φ = 3809232.

The previous prime is 4126657. The next prime is 4126693. The reversal of 4126681 is 1866214.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1849600 + 2277081 = 1360^2 + 1509^2 .

It is a cyclic number.

It is not a de Polignac number, because 4126681 - 2¹¹ = 4124633 is a prime.

It is a super-2 number, since 2×4126681² = 34058992151522, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

4126681 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4126621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158706 + ... + 158731.

It is an arithmetic number, because the mean of its divisors is an integer number (1111033).

Almost surely, 2^4126681 is an apocalyptic number.

It is an amenable number.

4126681 is a deficient number, since it is larger than the sum of its proper divisors (317451).

4126681 is a wasteful number, since it uses less digits than its factorization.

4126681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317450.

The product of its digits is 2304, while the sum is 28.

The square root of 4126681 is about 2031.4233925994. The cubic root of 4126681 is about 160.3984988552.

It can be divided in two parts, 412 and 6681, that multiplied together give a palindrome (2752572).

The spelling of 4126681 in words is "four million, one hundred twenty-six thousand, six hundred eighty-one".