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2120154130 = 25436777283
BaseRepresentation
bin111111001011110…
…1111110000010010
312110202102222201001
41332113233300102
513320224413010
6550214132214
7103353004243
oct17627576022
95422388631
102120154130
119988541a6
124b205106a
1327a326493
14161814cca
15c61e8c3a
hex7e5efc12

2120154130 has 32 divisors (see below), whose sum is σ = 3911333184. Its totient is φ = 827002176.

The previous prime is 2120154103. The next prime is 2120154149. The reversal of 2120154130 is 314510212.

It is a junction number, because it is equal to n+sod(n) for n = 2120154098 and 2120154107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 287469 + ... + 294751.

It is an arithmetic number, because the mean of its divisors is an integer number (122229162).

Almost surely, 22120154130 is an apocalyptic number.

2120154130 is a deficient number, since it is larger than the sum of its proper divisors (1791179054).

2120154130 is a wasteful number, since it uses less digits than its factorization.

2120154130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8010.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 2120154130 is about 46045.1314473094. The cubic root of 2120154130 is about 1284.6627890771.

Adding to 2120154130 its reverse (314510212), we get a palindrome (2434664342).

The spelling of 2120154130 in words is "two billion, one hundred twenty million, one hundred fifty-four thousand, one hundred thirty".

Divisors: 1 2 5 10 43 86 215 430 677 1354 3385 6770 7283 14566 29111 36415 58222 72830 145555 291110 313169 626338 1565845 3131690 4930591 9861182 24652955 49305910 212015413 424030826 1060077065 2120154130