7945042 has 16 divisors (see below), whose sum is σ = 13813632. Its totient is φ = 3356640.

The previous prime is 7945039. The next prime is 7945057. The reversal of 7945042 is 2405497.

It is an Ulam number.

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 7944995 and 7945013.

It is an unprimeable number.

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, 3003 + ... + 4990.

It is an arithmetic number, because the mean of its divisors is an integer number (863352).

Almost surely, 2^7945042 is an apocalyptic number.

7945042 is a deficient number, since it is larger than the sum of its proper divisors (5868590).

7945042 is a wasteful number, since it uses less digits than its factorization.

7945042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8073.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 7945042 is about 2818.6950881569. The cubic root of 7945042 is about 199.5409639020.

The spelling of 7945042 in words is "seven million, nine hundred forty-five thousand, forty-two".