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207142741 = 1322936949
BaseRepresentation
bin11000101100010…
…11111101010101
3112102202221102101
430112023331111
5411012031431
632315442101
75063453461
oct1426137525
9472687371
10207142741
11a6a21453
1259456331
1333bb8490
141d7214a1
15132ba961
hexc58bf55

207142741 has 8 divisors (see below), whose sum is σ = 223206200. Its totient is φ = 191097792.

The previous prime is 207142729. The next prime is 207142751. The reversal of 207142741 is 147241702.

It can be written as a sum of positive squares in 4 ways, for example, as 18190225 + 188952516 = 4265^2 + 13746^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 207142741 - 223 = 198754133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207142751) 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, 26335 + ... + 33283.

It is an arithmetic number, because the mean of its divisors is an integer number (27900775).

Almost surely, 2207142741 is an apocalyptic number.

It is an amenable number.

207142741 is a deficient number, since it is larger than the sum of its proper divisors (16063459).

207142741 is a wasteful number, since it uses less digits than its factorization.

207142741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9255.

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 207142741 is about 14392.4543077267. The cubic root of 207142741 is about 591.6841100282.

The spelling of 207142741 in words is "two hundred seven million, one hundred forty-two thousand, seven hundred forty-one".

Divisors: 1 13 2293 6949 29809 90337 15934057 207142741