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4258 = 22129
BaseRepresentation
bin1000010100010
312211201
41002202
5114013
631414
715262
oct10242
95751
104258
113221
12256a
131c27
1417a2
1513dd
hex10a2

4258 has 4 divisors (see below), whose sum is σ = 6390. Its totient is φ = 2128.

The previous prime is 4253. The next prime is 4259. The reversal of 4258 is 8524.

It can be divided in two parts, 42 and 58, that added together give a square (100 = 102).

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 only one way, i.e., 3969 + 289 = 63^2 + 17^2 .

It is an Ulam number.

It is a plaindrome in base 12 and base 15.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4253) by changing a digit.

4258 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1063 + ... + 1066.

24258 is an apocalyptic number.

4258 is a deficient number, since it is larger than the sum of its proper divisors (2132).

4258 is a wasteful number, since it uses less digits than its factorization.

4258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2131.

The product of its digits is 320, while the sum is 19.

The square root of 4258 is about 65.2533524043. The cubic root of 4258 is about 16.2082161240.

The spelling of 4258 in words is "four thousand, two hundred fifty-eight".

Divisors: 1 2 2129 4258