142104321 has 32 divisors (see below), whose sum is σ = 220147200. Its totient is φ = 90478080.

The previous prime is 142104317. The next prime is 142104329. The reversal of 142104321 is 123401241.

It is not a de Polignac number, because 142104321 - 2² = 142104317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142104294 and 142104303.

It is not an unprimeable number, because it can be changed into a prime (142104329) 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 31 ways as a sum of consecutive naturals, for example, 75016 + ... + 76886.

It is an arithmetic number, because the mean of its divisors is an integer number (6879600).

Almost surely, 2^142104321 is an apocalyptic number.

It is an amenable number.

142104321 is a deficient number, since it is larger than the sum of its proper divisors (78042879).

142104321 is a wasteful number, since it uses less digits than its factorization.

142104321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2006 (or 2000 counting only the distinct ones).

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

The square root of 142104321 is about 11920.7516960970. The cubic root of 142104321 is about 521.8380723796.

Adding to 142104321 its reverse (123401241), we get a palindrome (265505562).

The spelling of 142104321 in words is "one hundred forty-two million, one hundred four thousand, three hundred twenty-one".