142004 has 12 divisors (see below), whose sum is σ = 251328. Its totient is φ = 70200.

The previous prime is 141991. The next prime is 142007. The reversal of 142004 is 400241.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142007) by changing a digit.

142004 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389 + ... + 659.

It is an arithmetic number, because the mean of its divisors is an integer number (20944).

2¹⁴²⁰⁰⁴ is an apocalyptic number.

It is an amenable number.

142004 is a deficient number, since it is larger than the sum of its proper divisors (109324).

142004 is a wasteful number, since it uses less digits than its factorization.

142004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406 (or 404 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 142004 is about 376.8341810399. The cubic root of 142004 is about 52.1715243270.

Adding to 142004 its reverse (400241), we get a palindrome (542245).

The spelling of 142004 in words is "one hundred forty-two thousand, four", and thus it is an iban number.