8121128 has 16 divisors (see below), whose sum is σ = 15307380. Its totient is φ = 4039168.

The previous prime is 8121119. The next prime is 8121199. The reversal of 8121128 is 8211218.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6959044 + 1162084 = 2638^2 + 1078^2 .

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1001 + ... + 4152.

Almost surely, 2^8121128 is an apocalyptic number.

It is an amenable number.

8121128 is a deficient number, since it is larger than the sum of its proper divisors (7186252).

8121128 is a wasteful number, since it uses less digits than its factorization.

8121128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5356 (or 5352 counting only the distinct ones).

The product of its digits is 256, while the sum is 23.

The square root of 8121128 is about 2849.7592880803. The cubic root of 8121128 is about 201.0043479831.

The spelling of 8121128 in words is "eight million, one hundred twenty-one thousand, one hundred twenty-eight".