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120081 = 3133079
BaseRepresentation
bin11101010100010001
320002201110
4131110101
512320311
62323533
71010043
oct352421
9202643
10120081
1182245
12595a9
1342870
1431a93
15258a6
hex1d511

120081 has 8 divisors (see below), whose sum is σ = 172480. Its totient is φ = 73872.

The previous prime is 120079. The next prime is 120091. The reversal of 120081 is 180021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 120081 - 21 = 120079 is a prime.

It is a super-2 number, since 2×1200812 = 28838893122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1501 + ... + 1578.

It is an arithmetic number, because the mean of its divisors is an integer number (21560).

2120081 is an apocalyptic number.

It is an amenable number.

120081 is a deficient number, since it is larger than the sum of its proper divisors (52399).

120081 is a wasteful number, since it uses less digits than its factorization.

120081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3095.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 120081 is about 346.5270552208. The cubic root of 120081 is about 49.3353369448.

The spelling of 120081 in words is "one hundred twenty thousand, eighty-one".

Divisors: 1 3 13 39 3079 9237 40027 120081