139061 has 8 divisors (see below), whose sum is σ = 157920. Its totient is φ = 121392.

The previous prime is 139033. The next prime is 139067. The reversal of 139061 is 160931.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139061 is a prime.

It is a Duffinian number.

It is a Curzon number.

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 139061.

It is not an unprimeable number, because it can be changed into a prime (139067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35 + ... + 528.

It is an arithmetic number, because the mean of its divisors is an integer number (19740).

2¹³⁹⁰⁶¹ is an apocalyptic number.

It is an amenable number.

139061 is a deficient number, since it is larger than the sum of its proper divisors (18859).

139061 is a wasteful number, since it uses less digits than its factorization.

139061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 139061 is about 372.9088360444. The cubic root of 139061 is about 51.8085911721.

Adding to 139061 its reverse (160931), we get a palindrome (299992).

The spelling of 139061 in words is "one hundred thirty-nine thousand, sixty-one".