104142321 has 32 divisors (see below), whose sum is σ = 163461120. Its totient is φ = 65392272.

The previous prime is 104142307. The next prime is 104142329. The reversal of 104142321 is 123241401.

It is not a de Polignac number, because 104142321 - 2⁹ = 104141809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 104142294 and 104142303.

It is not an unprimeable number, because it can be changed into a prime (104142329) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40356 + ... + 42858.

It is an arithmetic number, because the mean of its divisors is an integer number (5108160).

Almost surely, 2^104142321 is an apocalyptic number.

It is an amenable number.

104142321 is a deficient number, since it is larger than the sum of its proper divisors (59318799).

104142321 is a wasteful number, since it uses less digits than its factorization.

104142321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2602 (or 2596 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 104142321 is about 10205.0145026845. The cubic root of 104142321 is about 470.4813553452.

Adding to 104142321 its reverse (123241401), we get a palindrome (227383722).

The spelling of 104142321 in words is "one hundred four million, one hundred forty-two thousand, three hundred twenty-one".