42665001 has 4 divisors (see below), whose sum is σ = 56886672. Its totient is φ = 28443332.

The previous prime is 42664991. The next prime is 42665017. The reversal of 42665001 is 10056624.

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 42665001 - 2⁷ = 42664873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42665041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7110831 + ... + 7110836.

It is an arithmetic number, because the mean of its divisors is an integer number (14221668).

Almost surely, 2^42665001 is an apocalyptic number.

It is an amenable number.

42665001 is a deficient number, since it is larger than the sum of its proper divisors (14221671).

42665001 is a wasteful number, since it uses less digits than its factorization.

42665001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14221670.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 42665001 is about 6531.8451451332. The cubic root of 42665001 is about 349.4276386670.

The spelling of 42665001 in words is "forty-two million, six hundred sixty-five thousand, one".