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140230441 = 1310786957
BaseRepresentation
bin10000101101110…
…11111100101001
3100202212110000001
420112323330221
5241344333231
621525343001
73321640051
oct1026737451
9322773001
10140230441
117217a22a
123ab67a61
132308b1c0
14148a4561
15c49eb61
hex85bbf29

140230441 has 4 divisors (see below), whose sum is σ = 151017412. Its totient is φ = 129443472.

The previous prime is 140230427. The next prime is 140230459. The reversal of 140230441 is 144032041.

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 17464041 + 122766400 = 4179^2 + 11080^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-140230441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140230411) 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, 5393466 + ... + 5393491.

It is an arithmetic number, because the mean of its divisors is an integer number (37754353).

Almost surely, 2140230441 is an apocalyptic number.

It is an amenable number.

140230441 is a deficient number, since it is larger than the sum of its proper divisors (10786971).

140230441 is a wasteful number, since it uses less digits than its factorization.

140230441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10786970.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 140230441 is about 11841.8934719073. The cubic root of 140230441 is about 519.5341500936.

Adding to 140230441 its reverse (144032041), we get a palindrome (284262482).

The spelling of 140230441 in words is "one hundred forty million, two hundred thirty thousand, four hundred forty-one".

Divisors: 1 13 10786957 140230441