Search a number
-
+
1125421 = 11271131
BaseRepresentation
bin100010010110000101101
32010011210021
410102300231
5242003141
640042141
712365053
oct4226055
92104707
101125421
116a9600
12463351
1330533b
142141d3
151736d1
hex112c2d

1125421 has 12 divisors (see below), whose sum is σ = 1264032. Its totient is φ = 1001000.

The previous prime is 1125419. The next prime is 1125431. The reversal of 1125421 is 1245211.

It is not a de Polignac number, because 1125421 - 21 = 1125419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1125395 and 1125404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8526 + ... + 8656.

It is an arithmetic number, because the mean of its divisors is an integer number (105336).

21125421 is an apocalyptic number.

1125421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1125421 is a deficient number, since it is larger than the sum of its proper divisors (138611).

1125421 is a wasteful number, since it uses less digits than its factorization.

1125421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224 (or 213 counting only the distinct ones).

The product of its digits is 80, while the sum is 16.

The square root of 1125421 is about 1060.8586145194. The cubic root of 1125421 is about 104.0171630944.

The spelling of 1125421 in words is "one million, one hundred twenty-five thousand, four hundred twenty-one".

Divisors: 1 11 71 121 131 781 1441 8591 9301 15851 102311 1125421