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120506201 = 17923761
BaseRepresentation
bin1110010111011…
…00011101011001
322101202100102122
413023230131121
5221322144301
615542511025
72662200014
oct713543531
9271670378
10120506201
1162028102
1234435475
131bc7345a
141200c37b
15a8a581b
hex72ec759

120506201 has 6 divisors (see below), whose sum is σ = 121215402. Its totient is φ = 119801120.

The previous prime is 120506179. The next prime is 120506203. The reversal of 120506201 is 102605021.

It can be written as a sum of positive squares in only one way, i.e., 100480576 + 20025625 = 10024^2 + 4475^2 .

It is a de Polignac number, because none of the positive numbers 2k-120506201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120506201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120506203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30161 + ... + 33921.

It is an arithmetic number, because the mean of its divisors is an integer number (20202567).

Almost surely, 2120506201 is an apocalyptic number.

It is an amenable number.

120506201 is a deficient number, since it is larger than the sum of its proper divisors (709201).

120506201 is an frugal number, since it uses more digits than its factorization.

120506201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4119 (or 3940 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 120506201 is about 10977.5316442268. The cubic root of 120506201 is about 493.9349969379.

The spelling of 120506201 in words is "one hundred twenty million, five hundred six thousand, two hundred one".

Divisors: 1 179 3761 32041 673219 120506201