104140242 has 40 divisors (see below), whose sum is σ = 233936076. Its totient is φ = 34626528.

The previous prime is 104140219. The next prime is 104140243. The reversal of 104140242 is 242041401.

104140242 is a `hidden beast` number, since 10 + 414 + 0 + 242 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 79548561 + 24591681 = 8919^2 + 4959^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (104140243) 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 19 ways as a sum of consecutive naturals, for example, 118308 + ... + 119184.

Almost surely, 2^104140242 is an apocalyptic number.

104140242 is an abundant number, since it is smaller than the sum of its proper divisors (129795834).

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

104140242 is an equidigital number, since it uses as much as digits as its factorization.

104140242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1624 (or 1615 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 104140242 is about 10204.9126404884. The cubic root of 104140242 is about 470.4782245743.

Adding to 104140242 its reverse (242041401), we get a palindrome (346181643).

The spelling of 104140242 in words is "one hundred four million, one hundred forty thousand, two hundred forty-two".