4021161726 has 16 divisors (see below), whose sum is σ = 8113495824. Its totient is φ = 1328525184.

The previous prime is 4021161707. The next prime is 4021161733. The reversal of 4021161726 is 6271611204.

It is a junction number, because it is equal to n+sod(n) for n = 4021161693 and 4021161702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2964781 + ... + 2966136.

It is an arithmetic number, because the mean of its divisors is an integer number (507093489).

Almost surely, 2^4021161726 is an apocalyptic number.

4021161726 is an abundant number, since it is smaller than the sum of its proper divisors (4092334098).

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

4021161726 is a wasteful number, since it uses less digits than its factorization.

4021161726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5931035.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 4021161726 is about 63412.6306503681. The cubic root of 4021161726 is about 1590.1954753541.

The spelling of 4021161726 in words is "four billion, twenty-one million, one hundred sixty-one thousand, seven hundred twenty-six".