140140069 has 4 divisors (see below), whose sum is σ = 140231520. Its totient is φ = 140048620.

The previous prime is 140140043. The next prime is 140140073. The reversal of 140140069 is 960041041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 140140069 - 2⁹ = 140139557 is a prime.

It is a super-2 number, since 2×140140069² = 39278477878649522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140140019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43387 + ... + 46504.

It is an arithmetic number, because the mean of its divisors is an integer number (35057880).

Almost surely, 2^140140069 is an apocalyptic number.

It is an amenable number.

140140069 is a deficient number, since it is larger than the sum of its proper divisors (91451).

140140069 is an equidigital number, since it uses as much as digits as its factorization.

140140069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91450.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 140140069 is about 11838.0770820265. The cubic root of 140140069 is about 519.4225209079.

The spelling of 140140069 in words is "one hundred forty million, one hundred forty thousand, sixty-nine".