42005665033 has 4 divisors (see below), whose sum is σ = 42982541008. Its totient is φ = 41028789060.

The previous prime is 42005664977. The next prime is 42005665087. The reversal of 42005665033 is 33056650024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42005665033 - 2³³ = 33415730441 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42005665033.

It is not an unprimeable number, because it can be changed into a prime (42005665733) 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, 488437923 + ... + 488438008.

It is an arithmetic number, because the mean of its divisors is an integer number (10745635252).

Almost surely, 2^42005665033 is an apocalyptic number.

42005665033 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

42005665033 is a deficient number, since it is larger than the sum of its proper divisors (976875975).

42005665033 is an equidigital number, since it uses as much as digits as its factorization.

42005665033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976875974.

The product of its (nonzero) digits is 64800, while the sum is 34.

The spelling of 42005665033 in words is "forty-two billion, five million, six hundred sixty-five thousand, thirty-three".