42006042007 has 4 divisors (see below), whose sum is σ = 42006661216. Its totient is φ = 42005422800.

The previous prime is 42006041989. The next prime is 42006042031. The reversal of 42006042007 is 70024060024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42006042007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42006042047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193278 + ... + 348379.

It is an arithmetic number, because the mean of its divisors is an integer number (10501665304).

Almost surely, 2^42006042007 is an apocalyptic number.

42006042007 is a deficient number, since it is larger than the sum of its proper divisors (619209).

42006042007 is an equidigital number, since it uses as much as digits as its factorization.

42006042007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619208.

The product of its (nonzero) digits is 2688, while the sum is 25.

The spelling of 42006042007 in words is "forty-two billion, six million, forty-two thousand, seven".