42494109 has 8 divisors (see below), whose sum is σ = 64752960. Its totient is φ = 24282336.

The previous prime is 42494099. The next prime is 42494113. The reversal of 42494109 is 90149424.

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

It is not a de Polignac number, because 42494109 - 2¹³ = 42485917 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 42494109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42494119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1011744 + ... + 1011785.

It is an arithmetic number, because the mean of its divisors is an integer number (8094120).

Almost surely, 2^42494109 is an apocalyptic number.

It is an amenable number.

42494109 is a deficient number, since it is larger than the sum of its proper divisors (22258851).

42494109 is a wasteful number, since it uses less digits than its factorization.

42494109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2023539.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 42494109 is about 6518.7505704698. The cubic root of 42494109 is about 348.9604775128.

The spelling of 42494109 in words is "forty-two million, four hundred ninety-four thousand, one hundred nine".