42081924 has 24 divisors (see below), whose sum is σ = 98417088. Its totient is φ = 13995040.

The previous prime is 42081917. The next prime is 42081943. The reversal of 42081924 is 42918024.

It is a junction number, because it is equal to n+sod(n) for n = 42081891 and 42081900.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1729 + ... + 9335.

It is an arithmetic number, because the mean of its divisors is an integer number (4100712).

Almost surely, 2^42081924 is an apocalyptic number.

It is an amenable number.

42081924 is an abundant number, since it is smaller than the sum of its proper divisors (56335164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42081924 is a wasteful number, since it uses less digits than its factorization.

42081924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8075 (or 8073 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 42081924 is about 6487.0581930487. The cubic root of 42081924 is about 347.8285256414.

Adding to 42081924 its reverse (42918024), we get a palindrome (84999948).

The spelling of 42081924 in words is "forty-two million, eighty-one thousand, nine hundred twenty-four".