42493839 has 8 divisors (see below), whose sum is σ = 58486272. Its totient is φ = 27415320.

The previous prime is 42493837. The next prime is 42493849. The reversal of 42493839 is 93839424.

It is a happy number.

42493839 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 42493839 - 2¹ = 42493837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42493839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42493837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228369 + ... + 228554.

It is an arithmetic number, because the mean of its divisors is an integer number (7310784).

Almost surely, 2^42493839 is an apocalyptic number.

42493839 is a deficient number, since it is larger than the sum of its proper divisors (15992433).

42493839 is a wasteful number, since it uses less digits than its factorization.

42493839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456957.

The product of its digits is 186624, while the sum is 42.

The square root of 42493839 is about 6518.7298609468. The cubic root of 42493839 is about 348.9597384337.

The spelling of 42493839 in words is "forty-two million, four hundred ninety-three thousand, eight hundred thirty-nine".