140101 has 6 divisors (see below), whose sum is σ = 151890. Its totient is φ = 129168.

The previous prime is 140071. The next prime is 140111. The reversal of 140101 is 101041.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 225 + 139876 = 15^2 + 374^2 .

It is not a de Polignac number, because 140101 - 2⁵ = 140069 is a prime.

It is a Duffinian number.

140101 is a modest number, since divided by 101 gives 14 as remainder.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 246 + ... + 583.

It is an arithmetic number, because the mean of its divisors is an integer number (25315).

2¹⁴⁰¹⁰¹ is an apocalyptic number.

It is an amenable number.

140101 is a deficient number, since it is larger than the sum of its proper divisors (11789).

140101 is an equidigital number, since it uses as much as digits as its factorization.

140101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855 (or 842 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 140101 is about 374.3006812711. The cubic root of 140101 is about 51.9374247290.

Adding to 140101 its reverse (101041), we get a palindrome (241142).

Subtracting from 140101 its reverse (101041), we obtain a triangular number (39060 = T₂₇₉).

The spelling of 140101 in words is "one hundred forty thousand, one hundred one", and thus it is an iban number.