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1243434206005 = 52207112680943
BaseRepresentation
bin10010000110000010011…
…101000100001100110101
311101212112001211101110221
4102012002131010030311
5130333023124043010
62351120434214341
7155556313235155
oct22060235041465
94355461741427
101243434206005
1143a379213a12
12180b9b7243b1
1390341cab614
144427ac48765
1522527e34dda
hex12182744335

1243434206005 has 8 divisors (see below), whose sum is σ = 1492797146112. Its totient is φ = 994296632208.

The previous prime is 1243434205987. The next prime is 1243434206033. The reversal of 1243434206005 is 5006024343421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1243434206005 is a prime.

It is a super-2 number, since 2×12434342060052 (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56329437 + ... + 56351506.

It is an arithmetic number, because the mean of its divisors is an integer number (186599643264).

Almost surely, 21243434206005 is an apocalyptic number.

It is an amenable number.

1243434206005 is a deficient number, since it is larger than the sum of its proper divisors (249362940107).

1243434206005 is a wasteful number, since it uses less digits than its factorization.

1243434206005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112683155.

The product of its (nonzero) digits is 69120, while the sum is 34.

Adding to 1243434206005 its reverse (5006024343421), we get a palindrome (6249458549426).

The spelling of 1243434206005 in words is "one trillion, two hundred forty-three billion, four hundred thirty-four million, two hundred six thousand, five".

Divisors: 1 5 2207 11035 112680943 563404715 248686841201 1243434206005