139142 has 8 divisors (see below), whose sum is σ = 216000. Its totient is φ = 67144.

The previous prime is 139133. The next prime is 139169. The reversal of 139142 is 241931.

139142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 139142.

It is an unprimeable number.

139142 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, 1142 + ... + 1257.

It is an arithmetic number, because the mean of its divisors is an integer number (27000).

2¹³⁹¹⁴² is an apocalyptic number.

139142 is a deficient number, since it is larger than the sum of its proper divisors (76858).

139142 is a wasteful number, since it uses less digits than its factorization.

139142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2430.

The product of its digits is 216, while the sum is 20.

The square root of 139142 is about 373.0174258664. The cubic root of 139142 is about 51.8186483445.

The spelling of 139142 in words is "one hundred thirty-nine thousand, one hundred forty-two".