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30042017 = 71423127
BaseRepresentation
bin111001010011…
…0011110100001
32002112021220022
41302212132201
530142321032
62551523225
7513232025
oct162463641
962467808
1030042017
1115a5a015
12a089515
1362bb155
143dc0385
152986512
hex1ca67a1

30042017 has 4 divisors (see below), whose sum is σ = 30465216. Its totient is φ = 29618820.

The previous prime is 30042013. The next prime is 30042031. The reversal of 30042017 is 71024003.

It is a happy number.

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 30042017 - 22 = 30042013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30041986 and 30042004.

It is not an unprimeable number, because it can be changed into a prime (30042011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211493 + ... + 211634.

It is an arithmetic number, because the mean of its divisors is an integer number (7616304).

Almost surely, 230042017 is an apocalyptic number.

It is an amenable number.

30042017 is a deficient number, since it is larger than the sum of its proper divisors (423199).

30042017 is an equidigital number, since it uses as much as digits as its factorization.

30042017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423198.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 30042017 is about 5481.0598427676. The cubic root of 30042017 is about 310.8682458004.

The spelling of 30042017 in words is "thirty million, forty-two thousand, seventeen".

Divisors: 1 71 423127 30042017