8211942 has 48 divisors (see below), whose sum is σ = 18821712. Its totient is φ = 2682720.

The previous prime is 8211919. The next prime is 8211949. The reversal of 8211942 is 2491128.

It is a super-2 number, since 2×8211942² = 134871982822728, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8211949) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29508 + ... + 29784.

It is an arithmetic number, because the mean of its divisors is an integer number (392119).

Almost surely, 2^8211942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8211942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9410856).

8211942 is an abundant number, since it is smaller than the sum of its proper divisors (10609770).

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

8211942 is a wasteful number, since it uses less digits than its factorization.

8211942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355 (or 343 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 8211942 is about 2865.6486176780. The cubic root of 8211942 is about 201.7508118982.

The spelling of 8211942 in words is "eight million, two hundred eleven thousand, nine hundred forty-two".