140166101 has 4 divisors (see below), whose sum is σ = 143954412. Its totient is φ = 136377792.

The previous prime is 140166073. The next prime is 140166109. The reversal of 140166101 is 101661041.

140166101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 117831025 + 22335076 = 10855^2 + 4726^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140166101 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140166109) 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, 1894100 + ... + 1894173.

It is an arithmetic number, because the mean of its divisors is an integer number (35988603).

Almost surely, 2^140166101 is an apocalyptic number.

It is an amenable number.

140166101 is a deficient number, since it is larger than the sum of its proper divisors (3788311).

140166101 is an equidigital number, since it uses as much as digits as its factorization.

140166101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3788310.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 140166101 is about 11839.1765338642. The cubic root of 140166101 is about 519.4546810412.

The spelling of 140166101 in words is "one hundred forty million, one hundred sixty-six thousand, one hundred one".