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120398071 = 172369877
BaseRepresentation
bin1110010110100…
…10000011110111
322101112212002211
413023102003313
5221310214241
615540314251
72661236533
oct713220367
9271485084
10120398071
1161a63942
12343a2987
131bc36181
1411dc0bc3
15a883781
hex72d20f7

120398071 has 4 divisors (see below), whose sum is σ = 120469672. Its totient is φ = 120326472.

The previous prime is 120398027. The next prime is 120398081. The reversal of 120398071 is 170893021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 170893021 = 1313145617.

It is a cyclic number.

It is not a de Polignac number, because 120398071 - 27 = 120397943 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 (120398011) 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, 33216 + ... + 36661.

It is an arithmetic number, because the mean of its divisors is an integer number (30117418).

Almost surely, 2120398071 is an apocalyptic number.

120398071 is a deficient number, since it is larger than the sum of its proper divisors (71601).

120398071 is an equidigital number, since it uses as much as digits as its factorization.

120398071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71600.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 120398071 is about 10972.6054791011. The cubic root of 120398071 is about 493.7872170633.

The spelling of 120398071 in words is "one hundred twenty million, three hundred ninety-eight thousand, seventy-one".

Divisors: 1 1723 69877 120398071