8042542 has 16 divisors (see below), whose sum is σ = 12467952. Its totient is φ = 3888000.

The previous prime is 8042533. The next prime is 8042543. The reversal of 8042542 is 2452408.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8042543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18358 + ... + 18790.

It is an arithmetic number, because the mean of its divisors is an integer number (779247).

Almost surely, 2^8042542 is an apocalyptic number.

8042542 is a deficient number, since it is larger than the sum of its proper divisors (4425410).

8042542 is a wasteful number, since it uses less digits than its factorization.

8042542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723.

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 8042542 is about 2835.9375874656. The cubic root of 8042542 is about 200.3538901063.

The spelling of 8042542 in words is "eight million, forty-two thousand, five hundred forty-two".