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2121240095 = 51343758941
BaseRepresentation
bin111111001101111…
…1000111000011111
312110211111011100222
41332123320320133
513321014140340
6550253311555
7103365146312
oct17633707037
95424434328
102121240095
11999426097
124b24955bb
1327a616870
14161a18979
15c63608b5
hex7e6f8e1f

2121240095 has 16 divisors (see below), whose sum is σ = 2805049632. Its totient is φ = 1530023040.

The previous prime is 2121240071. The next prime is 2121240101. The reversal of 2121240095 is 5900421212.

It is not a de Polignac number, because 2121240095 - 214 = 2121223711 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 376676 + ... + 382265.

It is an arithmetic number, because the mean of its divisors is an integer number (175315602).

Almost surely, 22121240095 is an apocalyptic number.

2121240095 is a deficient number, since it is larger than the sum of its proper divisors (683809537).

2121240095 is a wasteful number, since it uses less digits than its factorization.

2121240095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759002.

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

The square root of 2121240095 is about 46056.9223353016. The cubic root of 2121240095 is about 1284.8820908532.

The spelling of 2121240095 in words is "two billion, one hundred twenty-one million, two hundred forty thousand, ninety-five".

Divisors: 1 5 13 43 65 215 559 2795 758941 3794705 9866233 32634463 49331165 163172315 424248019 2121240095