139534 has 4 divisors (see below), whose sum is σ = 209304. Its totient is φ = 69766.

The previous prime is 139511. The next prime is 139537. The reversal of 139534 is 435931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 435931 = 17 ⋅25643.

It is a junction number, because it is equal to n+sod(n) for n = 139499 and 139508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139537) by changing a digit.

139534 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 as a sum of consecutive naturals, namely, 34882 + ... + 34885.

It is an arithmetic number, because the mean of its divisors is an integer number (52326).

2¹³⁹⁵³⁴ is an apocalyptic number.

139534 is a deficient number, since it is larger than the sum of its proper divisors (69770).

139534 is an equidigital number, since it uses as much as digits as its factorization.

139534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69769.

The product of its digits is 1620, while the sum is 25.

The square root of 139534 is about 373.5425009286. The cubic root of 139534 is about 51.8672650198.

The spelling of 139534 in words is "one hundred thirty-nine thousand, five hundred thirty-four".