42065273 has 4 divisors (see below), whose sum is σ = 42175488. Its totient is φ = 41955060.

The previous prime is 42065269. The next prime is 42065333. The reversal of 42065273 is 37256024.

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 42065273 - 2² = 42065269 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42065203) 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, 54533 + ... + 55298.

It is an arithmetic number, because the mean of its divisors is an integer number (10543872).

Almost surely, 2^42065273 is an apocalyptic number.

It is an amenable number.

42065273 is a deficient number, since it is larger than the sum of its proper divisors (110215).

42065273 is a wasteful number, since it uses less digits than its factorization.

42065273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110214.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 42065273 is about 6485.7746646025. The cubic root of 42065273 is about 347.7826432586.

Subtracting from 42065273 its reverse (37256024), we obtain a square (4809249 = 2193²).

The spelling of 42065273 in words is "forty-two million, sixty-five thousand, two hundred seventy-three".