140302309 has 8 divisors (see below), whose sum is σ = 169777728. Its totient is φ = 113184960.

The previous prime is 140302303. The next prime is 140302339. The reversal of 140302309 is 903203041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 140302309 - 2³ = 140302301 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140302309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140302301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 589387 + ... + 589624.

It is an arithmetic number, because the mean of its divisors is an integer number (21222216).

Almost surely, 2^140302309 is an apocalyptic number.

It is an amenable number.

140302309 is a deficient number, since it is larger than the sum of its proper divisors (29475419).

140302309 is a wasteful number, since it uses less digits than its factorization.

140302309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179035.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 140302309 is about 11844.9275641517. The cubic root of 140302309 is about 519.6228885618.

The spelling of 140302309 in words is "one hundred forty million, three hundred two thousand, three hundred nine".