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120234013 = 177072589
BaseRepresentation
bin1110010101010…
…10000000011101
322101020112001121
413022222000131
5221234442023
615533010541
72656654324
oct712520035
9271215047
10120234013
1161961659
1234323a51
131bba95b3
1411d7b0bb
15a84ed5d
hex72aa01d

120234013 has 4 divisors (see below), whose sum is σ = 127306620. Its totient is φ = 113161408.

The previous prime is 120234011. The next prime is 120234019. The reversal of 120234013 is 310432021.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 58171129 + 62062884 = 7627^2 + 7878^2 .

It is a cyclic number.

It is not a de Polignac number, because 120234013 - 21 = 120234011 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 (120234011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3536278 + ... + 3536311.

It is an arithmetic number, because the mean of its divisors is an integer number (31826655).

Almost surely, 2120234013 is an apocalyptic number.

It is an amenable number.

120234013 is a deficient number, since it is larger than the sum of its proper divisors (7072607).

120234013 is an equidigital number, since it uses as much as digits as its factorization.

120234013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7072606.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 120234013 is about 10965.1271310460. The cubic root of 120234013 is about 493.5628320547.

Adding to 120234013 its reverse (310432021), we get a palindrome (430666034).

The spelling of 120234013 in words is "one hundred twenty million, two hundred thirty-four thousand, thirteen".

Divisors: 1 17 7072589 120234013