42826809 has 8 divisors (see below), whose sum is σ = 58180032. Its totient is φ = 28012400.

The previous prime is 42826801. The next prime is 42826811. The reversal of 42826809 is 90862824.

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

It is a cyclic number.

It is not a de Polignac number, because 42826809 - 2³ = 42826801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42826801) 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, 134517 + ... + 134834.

It is an arithmetic number, because the mean of its divisors is an integer number (7272504).

Almost surely, 2^42826809 is an apocalyptic number.

It is an amenable number.

42826809 is a deficient number, since it is larger than the sum of its proper divisors (15353223).

42826809 is a wasteful number, since it uses less digits than its factorization.

42826809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269407.

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 42826809 is about 6544.2195103771. The cubic root of 42826809 is about 349.8688188662.

The spelling of 42826809 in words is "forty-two million, eight hundred twenty-six thousand, eight hundred nine".