42089697 has 24 divisors (see below), whose sum is σ = 65904384. Its totient is φ = 25730784.

The previous prime is 42089687. The next prime is 42089713. The reversal of 42089697 is 79698024.

It is a happy number.

It is not a de Polignac number, because 42089697 - 2⁴ = 42089681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42089687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17968 + ... + 20174.

It is an arithmetic number, because the mean of its divisors is an integer number (2746016).

Almost surely, 2^42089697 is an apocalyptic number.

It is an amenable number.

42089697 is a deficient number, since it is larger than the sum of its proper divisors (23814687).

42089697 is a wasteful number, since it uses less digits than its factorization.

42089697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2389 (or 2386 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 42089697 is about 6487.6572813304. The cubic root of 42089697 is about 347.8499402570.

The spelling of 42089697 in words is "forty-two million, eighty-nine thousand, six hundred ninety-seven".