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122286013 = 809151157
BaseRepresentation
bin1110100100111…
…10111110111101
322112002202212121
413102132332331
5222301123023
620045002541
73013261663
oct722367675
9275082777
10122286013
1163033323
1234b53451
131c4475b5
1412352c33
15ab07d5d
hex749efbd

122286013 has 4 divisors (see below), whose sum is σ = 122437980. Its totient is φ = 122134048.

The previous prime is 122286007. The next prime is 122286019. The reversal of 122286013 is 310682221.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (122286007) and next prime (122286019).

It can be written as a sum of positive squares in 2 ways, for example, as 69839449 + 52446564 = 8357^2 + 7242^2 .

It is a cyclic number.

It is not a de Polignac number, because 122286013 - 217 = 122154941 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 (122286019) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 74770 + ... + 76387.

It is an arithmetic number, because the mean of its divisors is an integer number (30609495).

Almost surely, 2122286013 is an apocalyptic number.

It is an amenable number.

122286013 is a deficient number, since it is larger than the sum of its proper divisors (151967).

122286013 is an equidigital number, since it uses as much as digits as its factorization.

122286013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151966.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 122286013 is about 11058.3006379823. The cubic root of 122286013 is about 496.3548408751.

The spelling of 122286013 in words is "one hundred twenty-two million, two hundred eighty-six thousand, thirteen".

Divisors: 1 809 151157 122286013