42273907 has 4 divisors (see below), whose sum is σ = 45525760. Its totient is φ = 39022056.

The previous prime is 42273901. The next prime is 42273929. The reversal of 42273907 is 70937224.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42273907 - 2³ = 42273899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42273901) 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 3 ways as a sum of consecutive naturals, for example, 1625907 + ... + 1625932.

It is an arithmetic number, because the mean of its divisors is an integer number (11381440).

Almost surely, 2^42273907 is an apocalyptic number.

42273907 is a deficient number, since it is larger than the sum of its proper divisors (3251853).

42273907 is a wasteful number, since it uses less digits than its factorization.

42273907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3251852.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 42273907 is about 6501.8387399258. The cubic root of 42273907 is about 348.3566690460.

The spelling of 42273907 in words is "forty-two million, two hundred seventy-three thousand, nine hundred seven".