42394042 has 16 divisors (see below), whose sum is σ = 64476000. Its totient is φ = 20904048.

The previous prime is 42394003. The next prime is 42394057. The reversal of 42394042 is 24049324.

42394042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 42394042.

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, 84709 + ... + 85207.

It is an arithmetic number, because the mean of its divisors is an integer number (4029750).

Almost surely, 2^42394042 is an apocalyptic number.

42394042 is a deficient number, since it is larger than the sum of its proper divisors (22081958).

42394042 is a wasteful number, since it uses less digits than its factorization.

42394042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 42394042 is about 6511.0707260788. The cubic root of 42394042 is about 348.6863463860.

It can be divided in two parts, 4239 and 4042, that added together give a square (8281 = 91²).

The spelling of 42394042 in words is "forty-two million, three hundred ninety-four thousand, forty-two".