42440829 has 8 divisors (see below), whose sum is σ = 58413312. Its totient is φ = 27381120.

The previous prime is 42440821. The next prime is 42440861. The reversal of 42440829 is 92804424.

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

It is not a de Polignac number, because 42440829 - 2³ = 42440821 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 42440829.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42440821) 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, 228084 + ... + 228269.

It is an arithmetic number, because the mean of its divisors is an integer number (7301664).

Almost surely, 2^42440829 is an apocalyptic number.

It is an amenable number.

42440829 is a deficient number, since it is larger than the sum of its proper divisors (15972483).

42440829 is a wasteful number, since it uses less digits than its factorization.

42440829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456387.

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 42440829 is about 6514.6626159764. The cubic root of 42440829 is about 348.8145718748.

The spelling of 42440829 in words is "forty-two million, four hundred forty thousand, eight hundred twenty-nine".