140529109 has 6 divisors (see below), whose sum is σ = 163472694. Its totient is φ = 120453480.

The previous prime is 140529079. The next prime is 140529121. The reversal of 140529109 is 901925041.

It can be written as a sum of positive squares in only one way, i.e., 80156209 + 60372900 = 8953^2 + 7770^2 .

It is not a de Polignac number, because 140529109 - 2⁷ = 140528981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140529409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1433922 + ... + 1434019.

It is an arithmetic number, because the mean of its divisors is an integer number (27245449).

Almost surely, 2^140529109 is an apocalyptic number.

It is an amenable number.

140529109 is a deficient number, since it is larger than the sum of its proper divisors (22943585).

140529109 is an equidigital number, since it uses as much as digits as its factorization.

140529109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2867955 (or 2867948 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 140529109 is about 11854.4974165926. The cubic root of 140529109 is about 519.9027295869.

The spelling of 140529109 in words is "one hundred forty million, five hundred twenty-nine thousand, one hundred nine".