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120662681 is a prime number
BaseRepresentation
bin1110011000100…
…10101010011001
322102001022002012
413030102222121
5221342201211
615550115305
72663421146
oct714225231
9272038065
10120662681
1162124727
12344abb35
131bcc9749
141204d3cd
15a8d6d8b
hex7312a99

120662681 has 2 divisors, whose sum is σ = 120662682. Its totient is φ = 120662680.

The previous prime is 120662653. The next prime is 120662693. The reversal of 120662681 is 186266021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87254281 + 33408400 = 9341^2 + 5780^2 .

It is an emirp because it is prime and its reverse (186266021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120662681 - 218 = 120400537 is a prime.

It is a super-2 number, since 2×1206626812 = 29118965172215522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (120665681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60331340 + 60331341.

It is an arithmetic number, because the mean of its divisors is an integer number (60331341).

Almost surely, 2120662681 is an apocalyptic number.

It is an amenable number.

120662681 is a deficient number, since it is larger than the sum of its proper divisors (1).

120662681 is an equidigital number, since it uses as much as digits as its factorization.

120662681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 120662681 is about 10984.6566173003. The cubic root of 120662681 is about 494.1486996827.

It can be divided in two parts, 12066 and 2681, that multiplied together give a triangular number (32348946 = T8043).

The spelling of 120662681 in words is "one hundred twenty million, six hundred sixty-two thousand, six hundred eighty-one".