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120233109 = 340077703
BaseRepresentation
bin1110010101010…
…01110010010101
322101020110211010
413022221302111
5221234424414
615533002433
72656651563
oct712516225
9271213733
10120233109
1161960a07
1234323419
131bba9069
1411d7aa33
15a84e959
hex72a9c95

120233109 has 4 divisors (see below), whose sum is σ = 160310816. Its totient is φ = 80155404.

The previous prime is 120233107. The next prime is 120233111. The reversal of 120233109 is 901332021.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 901332021 = 3300444007.

It is an interprime number because it is at equal distance from previous prime (120233107) and next prime (120233111).

It is not a de Polignac number, because 120233109 - 21 = 120233107 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 (120233107) 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, 20038849 + ... + 20038854.

It is an arithmetic number, because the mean of its divisors is an integer number (40077704).

Almost surely, 2120233109 is an apocalyptic number.

It is an amenable number.

120233109 is a deficient number, since it is larger than the sum of its proper divisors (40077707).

120233109 is an equidigital number, since it uses as much as digits as its factorization.

120233109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40077706.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 120233109 is about 10965.0859093762. The cubic root of 120233109 is about 493.5615950727.

The spelling of 120233109 in words is "one hundred twenty million, two hundred thirty-three thousand, one hundred nine".

Divisors: 1 3 40077703 120233109