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140247823 is a prime number
BaseRepresentation
bin10000101110000…
…00001100001111
3100202220022211211
420113000030033
5241400412243
621525555251
73322041532
oct1027001417
9322808754
10140247823
11721912a1
123ab75b27
13230960a1
14148aaa19
15c4a4d9d
hex85c030f

140247823 has 2 divisors, whose sum is σ = 140247824. Its totient is φ = 140247822.

The previous prime is 140247763. The next prime is 140247827. The reversal of 140247823 is 328742041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140247823 - 221 = 138150671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140247827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70123911 + 70123912.

It is an arithmetic number, because the mean of its divisors is an integer number (70123912).

Almost surely, 2140247823 is an apocalyptic number.

140247823 is a deficient number, since it is larger than the sum of its proper divisors (1).

140247823 is an equidigital number, since it uses as much as digits as its factorization.

140247823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 140247823 is about 11842.6273689583. The cubic root of 140247823 is about 519.5556151655. Note that the first 3 decimals are identical.

Adding to 140247823 its reverse (328742041), we get a palindrome (468989864).

The spelling of 140247823 in words is "one hundred forty million, two hundred forty-seven thousand, eight hundred twenty-three".