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BaseRepresentation
bin10010000110011111
310202201001
4102012133
54333033
61331131
7426106
oct220637
9122631
1074143
1150783
1236aa7
1327994
141d03d
1516e7d
hex1219f

74143 has 2 divisors, whose sum is σ = 74144. Its totient is φ = 74142.

The previous prime is 74131. The next prime is 74149. The reversal of 74143 is 34147.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (34147) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74143 - 213 = 65951 is a prime.

It is an alternating number because its digits alternate between odd and even.

74143 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 74143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74149) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37071 + 37072.

It is an arithmetic number, because the mean of its divisors is an integer number (37072).

274143 is an apocalyptic number.

74143 is a deficient number, since it is larger than the sum of its proper divisors (1).

74143 is an equidigital number, since it uses as much as digits as its factorization.

74143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 336, while the sum is 19.

The square root of 74143 is about 272.2921225449. The cubic root of 74143 is about 42.0103904754.

It can be divided in two parts, 741 and 43, that added together give a square (784 = 282).

The spelling of 74143 in words is "seventy-four thousand, one hundred forty-three", and thus it is an iban number.