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2141909 = 71127817
BaseRepresentation
bin1000001010111011010101
311000211010222
420022323111
51022020114
6113524125
724130430
oct10127325
94024128
102141909
111233280
12873645
1359cc03
143da817
152c498e
hex20aed5

2141909 has 8 divisors (see below), whose sum is σ = 2670528. Its totient is φ = 1668960.

The previous prime is 2141903. The next prime is 2141917. The reversal of 2141909 is 9091412.

2141909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2141909 - 28 = 2141653 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2141903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13832 + ... + 13985.

It is an arithmetic number, because the mean of its divisors is an integer number (333816).

22141909 is an apocalyptic number.

It is an amenable number.

2141909 is a deficient number, since it is larger than the sum of its proper divisors (528619).

2141909 is a wasteful number, since it uses less digits than its factorization.

2141909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27835.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 2141909 is about 1463.5262211522. The cubic root of 2141909 is about 128.9041813944.

The spelling of 2141909 in words is "two million, one hundred forty-one thousand, nine hundred nine".

Divisors: 1 7 11 77 27817 194719 305987 2141909