8121042 has 24 divisors (see below), whose sum is σ = 17821440. Its totient is φ = 2672280.

The previous prime is 8121013. The next prime is 8121049. The reversal of 8121042 is 2401218.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (8121049) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1434 + ... + 4277.

It is an arithmetic number, because the mean of its divisors is an integer number (742560).

Almost surely, 2^8121042 is an apocalyptic number.

8121042 is an abundant number, since it is smaller than the sum of its proper divisors (9700398).

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

8121042 is a wasteful number, since it uses less digits than its factorization.

8121042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5798 (or 5795 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 8121042 is about 2849.7441990466. The cubic root of 8121042 is about 201.0036384579.

The spelling of 8121042 in words is "eight million, one hundred twenty-one thousand, forty-two".