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121300685 = 51141657
BaseRepresentation
bin1110011101011…
…10011011001101
322110020201020222
413032232123031
5222023110220
620011521125
73002016212
oct716563315
9273221228
10121300685
1162520000
12347591a5
131c190c6c
1412177b09
15a9b0e25
hex73ae6cd

121300685 has 20 divisors (see below), whose sum is σ = 160212540. Its totient is φ = 88165440.

The previous prime is 121300679. The next prime is 121300709. The reversal of 121300685 is 586003121.

It can be written as a sum of positive squares in 2 ways, for example, as 41126569 + 80174116 = 6413^2 + 8954^2 .

It is not a de Polignac number, because 121300685 - 28 = 121300429 is a prime.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 72377 + ... + 74033.

It is an arithmetic number, because the mean of its divisors is an integer number (8010627).

Almost surely, 2121300685 is an apocalyptic number.

It is an amenable number.

121300685 is a deficient number, since it is larger than the sum of its proper divisors (38911855).

121300685 is an frugal number, since it uses more digits than its factorization.

121300685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1706 (or 1673 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 121300685 is about 11013.6590195993. The cubic root of 121300685 is about 495.0181063336.

The spelling of 121300685 in words is "one hundred twenty-one million, three hundred thousand, six hundred eighty-five".

Divisors: 1 5 11 55 121 605 1331 1657 6655 8285 14641 18227 73205 91135 200497 1002485 2205467 11027335 24260137 121300685