42006144659 has 4 divisors (see below), whose sum is σ = 43141445904. Its totient is φ = 40870843416.

The previous prime is 42006144643. The next prime is 42006144689. The reversal of 42006144659 is 95644160024.

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

It is a cyclic number.

It is not a de Polignac number, because 42006144659 - 2⁴ = 42006144643 is a prime.

It is a super-2 number, since 2×42006144659² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42006144619) 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, 567650567 + ... + 567650640.

It is an arithmetic number, because the mean of its divisors is an integer number (10785361476).

Almost surely, 2^42006144659 is an apocalyptic number.

42006144659 is a deficient number, since it is larger than the sum of its proper divisors (1135301245).

42006144659 is a wasteful number, since it uses less digits than its factorization.

42006144659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135301244.

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 42006144659 in words is "forty-two billion, six million, one hundred forty-four thousand, six hundred fifty-nine".