42789807 has 12 divisors (see below), whose sum is σ = 61893000. Its totient is φ = 28487088.

The previous prime is 42789793. The next prime is 42789829. The reversal of 42789807 is 70898724.

It is a de Polignac number, because none of the positive numbers 2^k-42789807 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42787807) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4569 + ... + 10317.

It is an arithmetic number, because the mean of its divisors is an integer number (5157750).

Almost surely, 2^42789807 is an apocalyptic number.

42789807 is a deficient number, since it is larger than the sum of its proper divisors (19103193).

42789807 is a wasteful number, since it uses less digits than its factorization.

42789807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6582 (or 6579 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 42789807 is about 6541.3918243750. The cubic root of 42789807 is about 349.7680286019.

The spelling of 42789807 in words is "forty-two million, seven hundred eighty-nine thousand, eight hundred seven".