104540240 has 40 divisors (see below), whose sum is σ = 277779840. Its totient is φ = 35842176.

The previous prime is 104540237. The next prime is 104540263. The reversal of 104540240 is 42045401.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 92780 + ... + 93899.

It is an arithmetic number, because the mean of its divisors is an integer number (6944496).

Almost surely, 2^104540240 is an apocalyptic number.

104540240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

104540240 is an abundant number, since it is smaller than the sum of its proper divisors (173239600).

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

104540240 is a wasteful number, since it uses less digits than its factorization.

104540240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186699 (or 186693 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 104540240 is about 10224.4921634280. The cubic root of 104540240 is about 471.0798169224.

Adding to 104540240 its reverse (42045401), we get a palindrome (146585641).

The spelling of 104540240 in words is "one hundred four million, five hundred forty thousand, two hundred forty".