42809627 has 4 divisors (see below), whose sum is σ = 48925296. Its totient is φ = 36693960.

The previous prime is 42809593. The next prime is 42809651. The reversal of 42809627 is 72690824.

42809627 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 42809627 - 2⁶ = 42809563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42809687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3057824 + ... + 3057837.

It is an arithmetic number, because the mean of its divisors is an integer number (12231324).

Almost surely, 2^42809627 is an apocalyptic number.

42809627 is a deficient number, since it is larger than the sum of its proper divisors (6115669).

42809627 is an equidigital number, since it uses as much as digits as its factorization.

42809627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6115668.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 42809627 is about 6542.9066170930. The cubic root of 42809627 is about 349.8220237995.

The spelling of 42809627 in words is "forty-two million, eight hundred nine thousand, six hundred twenty-seven".