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242443143 = 3229391939
BaseRepresentation
bin11100111001101…
…10001110000111
3121220012101110200
432130312032013
5444031140033
640020221543
76002506215
oct1634661607
9556171420
10242443143
11114942138
126923a8b3
133b2c7ba7
14242adcb5
1516440013
hexe736387

242443143 has 12 divisors (see below), whose sum is σ = 351394680. Its totient is φ = 161075376.

The previous prime is 242443109. The next prime is 242443163. The reversal of 242443143 is 341344242.

It is a happy number.

It is not a de Polignac number, because 242443143 - 26 = 242443079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242443163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43333 + ... + 48606.

It is an arithmetic number, because the mean of its divisors is an integer number (29282890).

Almost surely, 2242443143 is an apocalyptic number.

242443143 is a deficient number, since it is larger than the sum of its proper divisors (108951537).

242443143 is a wasteful number, since it uses less digits than its factorization.

242443143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92238 (or 92235 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 242443143 is about 15570.5858271293. The cubic root of 242443143 is about 623.5481118717.

Adding to 242443143 its reverse (341344242), we get a palindrome (583787385).

The spelling of 242443143 in words is "two hundred forty-two million, four hundred forty-three thousand, one hundred forty-three".

Divisors: 1 3 9 293 879 2637 91939 275817 827451 26938127 80814381 242443143