42806407 has 8 divisors (see below), whose sum is σ = 50608800. Its totient is φ = 35425824.

The previous prime is 42806399. The next prime is 42806417. The reversal of 42806407 is 70460824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42806407 - 2³ = 42806399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42806417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105232 + ... + 105637.

It is an arithmetic number, because the mean of its divisors is an integer number (6326100).

Almost surely, 2^42806407 is an apocalyptic number.

42806407 is a deficient number, since it is larger than the sum of its proper divisors (7802393).

42806407 is a wasteful number, since it uses less digits than its factorization.

42806407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210905.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 42806407 is about 6542.6605444574. The cubic root of 42806407 is about 349.8132527572.

The spelling of 42806407 in words is "forty-two million, eight hundred six thousand, four hundred seven".