139755 has 32 divisors (see below), whose sum is σ = 281088. Its totient is φ = 58080.

The previous prime is 139753. The next prime is 139759. The reversal of 139755 is 557931.

139755 = T₄₂ + T₄₃ + ... + T₉₆.

It is a happy number.

139755 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 139755 - 2¹ = 139753 is a prime.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139753) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12700 + ... + 12710.

It is an arithmetic number, because the mean of its divisors is an integer number (8784).

2¹³⁹⁷⁵⁵ is an apocalyptic number.

139755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

139755 is an abundant number, since it is smaller than the sum of its proper divisors (141333).

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

139755 is an equidigital number, since it uses as much as digits as its factorization.

139755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48 (or 26 counting only the distinct ones).

The product of its digits is 4725, while the sum is 30.

The square root of 139755 is about 373.8382002953. The cubic root of 139755 is about 51.8946337835.

The spelling of 139755 in words is "one hundred thirty-nine thousand, seven hundred fifty-five".