42489142 has 16 divisors (see below), whose sum is σ = 66915072. Its totient is φ = 20195560.

The previous prime is 42489091. The next prime is 42489151. The reversal of 42489142 is 24198424.

It is a junction number, because it is equal to n+sod(n) for n = 42489098 and 42489107.

It is a congruent number.

It is an unprimeable number.

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, 4917 + ... + 10447.

It is an arithmetic number, because the mean of its divisors is an integer number (4182192).

Almost surely, 2^42489142 is an apocalyptic number.

42489142 is a deficient number, since it is larger than the sum of its proper divisors (24425930).

42489142 is a wasteful number, since it uses less digits than its factorization.

42489142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5723.

The product of its digits is 18432, while the sum is 34.

The square root of 42489142 is about 6518.3695814214. The cubic root of 42489142 is about 348.9468806930.

The spelling of 42489142 in words is "forty-two million, four hundred eighty-nine thousand, one hundred forty-two".