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4213250705 = 56521129221
BaseRepresentation
bin1111101100100001…
…0001101010010001
3101212121222022102102
43323020101222101
532112043010310
61534024330145
7206260016516
oct37310215221
911777868372
104213250705
1118722a7684
12997013955
13521b68071
142bd7c530d
15199d4a8a5
hexfb211a91

4213250705 has 8 divisors (see below), whose sum is σ = 5056715304. Its totient is φ = 3370057600.

The previous prime is 4213250687. The next prime is 4213250707. The reversal of 4213250705 is 5070523124.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 837292096 + 3375958609 = 28936^2 + 58103^2 .

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

It is not a de Polignac number, because 4213250705 - 28 = 4213250449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4213250707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32006 + ... + 97215.

It is an arithmetic number, because the mean of its divisors is an integer number (632089413).

Almost surely, 24213250705 is an apocalyptic number.

It is an amenable number.

4213250705 is a deficient number, since it is larger than the sum of its proper divisors (843464599).

4213250705 is a wasteful number, since it uses less digits than its factorization.

4213250705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135747.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 4213250705 is about 64909.5578863391. The cubic root of 4213250705 is about 1615.1236161198.

Adding to 4213250705 its reverse (5070523124), we get a palindrome (9283773829).

The spelling of 4213250705 in words is "four billion, two hundred thirteen million, two hundred fifty thousand, seven hundred five".

Divisors: 1 5 6521 32605 129221 646105 842650141 4213250705