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74105 = 514821
BaseRepresentation
bin10010000101111001
310202122122
4102011321
54332410
61331025
7426023
oct220571
9122578
1074105
1150749
1236a75
1327965
141d013
1516e55
hex12179

74105 has 4 divisors (see below), whose sum is σ = 88932. Its totient is φ = 59280.

The previous prime is 74101. The next prime is 74131. The reversal of 74105 is 50147.

Subtracting from 74105 its sum of digits (17), we obtain a cube (74088 = 423).

It is a happy number.

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 29584 + 44521 = 172^2 + 211^2 .

It is not a de Polignac number, because 74105 - 22 = 74101 is a prime.

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

It is a Duffinian number.

It is a plaindrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (74101) 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, 7406 + ... + 7415.

It is an arithmetic number, because the mean of its divisors is an integer number (22233).

274105 is an apocalyptic number.

It is an amenable number.

74105 is a deficient number, since it is larger than the sum of its proper divisors (14827).

74105 is a wasteful number, since it uses less digits than its factorization.

74105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14826.

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 74105 is about 272.2223356009. Note that the first 3 decimals coincide. The cubic root of 74105 is about 42.0032121504.

The spelling of 74105 in words is "seventy-four thousand, one hundred five".

Divisors: 1 5 14821 74105