8140042 has 16 divisors (see below), whose sum is σ = 13347072. Its totient is φ = 3706560.

The previous prime is 8140009. The next prime is 8140043. The reversal of 8140042 is 2400418.

8140042 is nontrivially palindromic in base 7.

It is not an unprimeable number, because it can be changed into a prime (8140043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2808 + ... + 4915.

It is an arithmetic number, because the mean of its divisors is an integer number (834192).

Almost surely, 2^8140042 is an apocalyptic number.

8140042 is a deficient number, since it is larger than the sum of its proper divisors (5207030).

8140042 is a wasteful number, since it uses less digits than its factorization.

8140042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7773.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 8140042 is about 2853.0758840241. The cubic root of 8140042 is about 201.1602724888.

The spelling of 8140042 in words is "eight million, one hundred forty thousand, forty-two".