42104140 has 48 divisors (see below), whose sum is σ = 96681312. Its totient is φ = 15307776.

The previous prime is 42104131. The next prime is 42104141. The reversal of 42104140 is 4140124.

It is not an unprimeable number, because it can be changed into a prime (42104141) 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 15 ways as a sum of consecutive naturals, for example, 16212 + ... + 18628.

It is an arithmetic number, because the mean of its divisors is an integer number (2014194).

Almost surely, 2^42104140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42104140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48340656).

42104140 is an abundant number, since it is smaller than the sum of its proper divisors (54577172).

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

42104140 is a wasteful number, since it uses less digits than its factorization.

42104140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2506 (or 2504 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 42104140 is about 6488.7702995252. The cubic root of 42104140 is about 347.8897237234.

Adding to 42104140 its reverse (4140124), we get a palindrome (46244264).

The spelling of 42104140 in words is "forty-two million, one hundred four thousand, one hundred forty".