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2143123 = 31257269
BaseRepresentation
bin1000001011001110010011
311000212210221
420023032103
51022034443
6113533511
724134113
oct10131623
94025727
102143123
111234184
12874297
135a0628
143db043
152c4eed
hex20b393

2143123 has 8 divisors (see below), whose sum is σ = 2229120. Its totient is φ = 2058240.

The previous prime is 2143109. The next prime is 2143147. The reversal of 2143123 is 3213412.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2143123 - 221 = 45971 is a prime.

It is a Duffinian number.

2143123 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2143097 and 2143106.

It is not an unprimeable number, because it can be changed into a prime (2143223) 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, 7833 + ... + 8101.

It is an arithmetic number, because the mean of its divisors is an integer number (278640).

22143123 is an apocalyptic number.

2143123 is a deficient number, since it is larger than the sum of its proper divisors (85997).

2143123 is a wasteful number, since it uses less digits than its factorization.

2143123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557.

The product of its digits is 144, while the sum is 16.

The square root of 2143123 is about 1463.9409141082. The cubic root of 2143123 is about 128.9285304090.

Adding to 2143123 its reverse (3213412), we get a palindrome (5356535).

The spelling of 2143123 in words is "two million, one hundred forty-three thousand, one hundred twenty-three".

Divisors: 1 31 257 269 7967 8339 69133 2143123