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120130869 = 340043623
BaseRepresentation
bin1110010100100…
…00110100110101
322101001021120110
413022100310311
5221223141434
615530453233
72656044525
oct712206465
9271037513
10120130869
11618a1111
1234294219
131bb71671
1411d51685
15a82e4e9
hex7290d35

120130869 has 4 divisors (see below), whose sum is σ = 160174496. Its totient is φ = 80087244.

The previous prime is 120130867. The next prime is 120130877. The reversal of 120130869 is 968031021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 120130869 - 21 = 120130867 is a prime.

It is a super-2 number, since 2×1201308692 = 28862851373390322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120130867) 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 in 3 ways as a sum of consecutive naturals, for example, 20021809 + ... + 20021814.

It is an arithmetic number, because the mean of its divisors is an integer number (40043624).

Almost surely, 2120130869 is an apocalyptic number.

It is an amenable number.

120130869 is a deficient number, since it is larger than the sum of its proper divisors (40043627).

120130869 is an equidigital number, since it uses as much as digits as its factorization.

120130869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40043626.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 120130869 is about 10960.4228476825. The cubic root of 120130869 is about 493.4216556722.

The spelling of 120130869 in words is "one hundred twenty million, one hundred thirty thousand, eight hundred sixty-nine".

Divisors: 1 3 40043623 120130869