42289673 has 4 divisors (see below), whose sum is σ = 43653888. Its totient is φ = 40925460.

The previous prime is 42289669. The next prime is 42289679. The reversal of 42289673 is 37698224.

It is a happy number.

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 42289673 - 2² = 42289669 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42289673.

It is not an unprimeable number, because it can be changed into a prime (42289679) 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, 682061 + ... + 682122.

It is an arithmetic number, because the mean of its divisors is an integer number (10913472).

Almost surely, 2^42289673 is an apocalyptic number.

It is an amenable number.

42289673 is a deficient number, since it is larger than the sum of its proper divisors (1364215).

42289673 is a wasteful number, since it uses less digits than its factorization.

42289673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364214.

The product of its digits is 145152, while the sum is 41.

The square root of 42289673 is about 6503.0510531596. The cubic root of 42289673 is about 348.3999700561.

The spelling of 42289673 in words is "forty-two million, two hundred eighty-nine thousand, six hundred seventy-three".