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140304243 = 346768081
BaseRepresentation
bin10000101110011…
…01111101110011
3100210000012020110
420113031331303
5241404213433
621531112403
73322365162
oct1027157563
9323005213
10140304243
117221a722
123aba2703
13230b5981
14148c33d9
15c4b6963
hex85cdf73

140304243 has 4 divisors (see below), whose sum is σ = 187072328. Its totient is φ = 93536160.

The previous prime is 140304223. The next prime is 140304253. The reversal of 140304243 is 342403041.

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

It is not a de Polignac number, because 140304243 - 28 = 140303987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140304223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23384038 + ... + 23384043.

It is an arithmetic number, because the mean of its divisors is an integer number (46768082).

Almost surely, 2140304243 is an apocalyptic number.

140304243 is a deficient number, since it is larger than the sum of its proper divisors (46768085).

140304243 is an equidigital number, since it uses as much as digits as its factorization.

140304243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46768084.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 140304243 is about 11845.0092021914. The cubic root of 140304243 is about 519.6252761348.

Adding to 140304243 its reverse (342403041), we get a palindrome (482707284).

The spelling of 140304243 in words is "one hundred forty million, three hundred four thousand, two hundred forty-three".

Divisors: 1 3 46768081 140304243