104440142 has 4 divisors (see below), whose sum is σ = 156660216. Its totient is φ = 52220070.

The previous prime is 104440139. The next prime is 104440199. The reversal of 104440142 is 241044401.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 26110034 + ... + 26110037.

It is an arithmetic number, because the mean of its divisors is an integer number (39165054).

Almost surely, 2^104440142 is an apocalyptic number.

104440142 is a deficient number, since it is larger than the sum of its proper divisors (52220074).

104440142 is an equidigital number, since it uses as much as digits as its factorization.

104440142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52220073.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 104440142 is about 10219.5959802724. The cubic root of 104440142 is about 470.9294148518.

Adding to 104440142 its reverse (241044401), we get a palindrome (345484543).

The spelling of 104440142 in words is "one hundred four million, four hundred forty thousand, one hundred forty-two".