140155 has 4 divisors (see below), whose sum is σ = 168192. Its totient is φ = 112120.

The previous prime is 140143. The next prime is 140159. The reversal of 140155 is 551041.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 140155 - 2⁵ = 140123 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (140159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14011 + ... + 14020.

It is an arithmetic number, because the mean of its divisors is an integer number (42048).

2¹⁴⁰¹⁵⁵ is an apocalyptic number.

140155 is a deficient number, since it is larger than the sum of its proper divisors (28037).

140155 is an equidigital number, since it uses as much as digits as its factorization.

140155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28036.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 140155 is about 374.3728088417. The cubic root of 140155 is about 51.9440967267.

Adding to 140155 its reverse (551041), we get a palindrome (691196).

The spelling of 140155 in words is "one hundred forty thousand, one hundred fifty-five".