42493787 has 16 divisors (see below), whose sum is σ = 50466240. Its totient is φ = 35008512.

The previous prime is 42493771. The next prime is 42493793. The reversal of 42493787 is 78739424.

42493787 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42493787 - 2⁴ = 42493771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42693787) 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 15 ways as a sum of consecutive naturals, for example, 71363 + ... + 71955.

It is an arithmetic number, because the mean of its divisors is an integer number (3154140).

Almost surely, 2^42493787 is an apocalyptic number.

42493787 is a deficient number, since it is larger than the sum of its proper divisors (7972453).

42493787 is a wasteful number, since it uses less digits than its factorization.

42493787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982.

The product of its digits is 338688, while the sum is 44.

The square root of 42493787 is about 6518.7258724386. The cubic root of 42493787 is about 348.9595960922.

The spelling of 42493787 in words is "forty-two million, four hundred ninety-three thousand, seven hundred eighty-seven".