139530 has 16 divisors (see below), whose sum is σ = 334944. Its totient is φ = 37200.

The previous prime is 139511. The next prime is 139537. The reversal of 139530 is 35931.

It is a junction number, because it is equal to n+sod(n) for n = 139497 and 139506.

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

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2296 + ... + 2355.

It is an arithmetic number, because the mean of its divisors is an integer number (20934).

2¹³⁹⁵³⁰ is an apocalyptic number.

139530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139530 is an abundant number, since it is smaller than the sum of its proper divisors (195414).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139530 is a wasteful number, since it uses less digits than its factorization.

139530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4661.

The product of its (nonzero) digits is 405, while the sum is 21.

The square root of 139530 is about 373.5371467471. The cubic root of 139530 is about 51.8667693914.

The spelling of 139530 in words is "one hundred thirty-nine thousand, five hundred thirty".