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258012141 = 386004047
BaseRepresentation
bin11110110000011…
…11001111101101
3122222111101010020
433120033033231
51012022342031
641334032353
76252031662
oct1730171755
9588441106
10258012141
11122706382
12724a86b9
13415b950a
14263a3a69
15179b8096
hexf60f3ed

258012141 has 4 divisors (see below), whose sum is σ = 344016192. Its totient is φ = 172008092.

The previous prime is 258012121. The next prime is 258012151. The reversal of 258012141 is 141210852.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 258012141 - 29 = 258011629 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258012121) 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, 43002021 + ... + 43002026.

It is an arithmetic number, because the mean of its divisors is an integer number (86004048).

Almost surely, 2258012141 is an apocalyptic number.

It is an amenable number.

258012141 is a deficient number, since it is larger than the sum of its proper divisors (86004051).

258012141 is an equidigital number, since it uses as much as digits as its factorization.

258012141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86004050.

The product of its (nonzero) digits is 640, while the sum is 24.

The square root of 258012141 is about 16062.7563325850. The cubic root of 258012141 is about 636.6196617740.

Adding to 258012141 its reverse (141210852), we get a palindrome (399222993).

The spelling of 258012141 in words is "two hundred fifty-eight million, twelve thousand, one hundred forty-one".

Divisors: 1 3 86004047 258012141