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1406241 = 37643
BaseRepresentation
bin101010111010100100001
32122110000000
411113110201
5324444431
650050213
714644554
oct5272441
92573000
101406241
11880591
12579969
133a30c5
1428869b
151cb9e6
hex157521

1406241 has 16 divisors (see below), whose sum is σ = 2112320. Its totient is φ = 936036.

The previous prime is 1406231. The next prime is 1406267. The reversal of 1406241 is 1426041.

1406241 is a `hidden beast` number, since 1 + 40 + 624 + 1 = 666.

It is not a de Polignac number, because 1406241 - 213 = 1398049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1406221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1866 + ... + 2508.

It is an arithmetic number, because the mean of its divisors is an integer number (132020).

21406241 is an apocalyptic number.

It is an amenable number.

1406241 is a deficient number, since it is larger than the sum of its proper divisors (706079).

1406241 is an frugal number, since it uses more digits than its factorization.

1406241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664 (or 646 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1406241 is about 1185.8503278239. The cubic root of 1406241 is about 112.0348796552.

It can be divided in two parts, 140624 and 1, that added together give a square (140625 = 3752).

The spelling of 1406241 in words is "one million, four hundred six thousand, two hundred forty-one".

Divisors: 1 3 9 27 81 243 643 729 1929 2187 5787 17361 52083 156249 468747 1406241