139042 has 8 divisors (see below), whose sum is σ = 219600. Its totient is φ = 65844.

The previous prime is 139033. The next prime is 139067. The reversal of 139042 is 240931.

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

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1792 + ... + 1867.

It is an arithmetic number, because the mean of its divisors is an integer number (27450).

2¹³⁹⁰⁴² is an apocalyptic number.

139042 is a deficient number, since it is larger than the sum of its proper divisors (80558).

139042 is a wasteful number, since it uses less digits than its factorization.

139042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3680.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 139042 is about 372.8833597789. The cubic root of 139042 is about 51.8062315168.

Adding to 139042 its reverse (240931), we get a palindrome (379973).

The spelling of 139042 in words is "one hundred thirty-nine thousand, forty-two".