42349807 has 4 divisors (see below), whose sum is σ = 42368256. Its totient is φ = 42331360.

The previous prime is 42349781. The next prime is 42349817. The reversal of 42349807 is 70894324.

It is a happy number.

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 42349807 - 2¹¹ = 42347759 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 (42349817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5194 + ... + 10567.

It is an arithmetic number, because the mean of its divisors is an integer number (10592064).

Almost surely, 2^42349807 is an apocalyptic number.

42349807 is a deficient number, since it is larger than the sum of its proper divisors (18449).

42349807 is a wasteful number, since it uses less digits than its factorization.

42349807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18448.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 42349807 is about 6507.6729327771. The cubic root of 42349807 is about 348.5650281727.

It can be divided in two parts, 4234 and 9807, that added together give a palindrome (14041).

The spelling of 42349807 in words is "forty-two million, three hundred forty-nine thousand, eight hundred seven".