42042006 has 12 divisors (see below), whose sum is σ = 91091052. Its totient is φ = 14013996.

The previous prime is 42041981. The next prime is 42042023. The reversal of 42042006 is 60024024.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 2335667 = 42042006 / (4 + 2 + 0 + 4 + 2 + 0 + 0 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 42042006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1167816 + ... + 1167851.

It is an arithmetic number, because the mean of its divisors is an integer number (7590921).

Almost surely, 2^42042006 is an apocalyptic number.

42042006 is an abundant number, since it is smaller than the sum of its proper divisors (49049046).

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

42042006 is a wasteful number, since it uses less digits than its factorization.

42042006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2335675 (or 2335672 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 42042006 is about 6483.9807217480. The cubic root of 42042006 is about 347.7185099839.

The spelling of 42042006 in words is "forty-two million, forty-two thousand, six", and thus it is an eban number.