Search a number
1239061 = 4147643
BaseRepresentation
bin100101110100000010101
32022221200011
410232200111
5304122221
642320221
713350265
oct4564025
92287604
101239061
11776a1a
124b9071
13344c95
142437a5
151971e1
hex12e815

1239061 has 8 divisors (see below), whose sum is σ = 1298304. Its totient is φ = 1181280.

The previous prime is 1239041. The next prime is 1239067. The reversal of 1239061 is 1609321.

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 1239061 - 211 = 1237013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1239067) 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, 1606 + ... + 2248.

It is an arithmetic number, because the mean of its divisors is an integer number (162288).

21239061 is an apocalyptic number.

1239061 is the 643-rd octagonal number.

It is an amenable number.

1239061 is a deficient number, since it is larger than the sum of its proper divisors (59243).

1239061 is an equidigital number, since it uses as much as digits as its factorization.

1239061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 1239061 is about 1113.1311692698. The cubic root of 1239061 is about 107.4065819038.

The spelling of 1239061 in words is "one million, two hundred thirty-nine thousand, sixty-one".

Divisors: 1 41 47 643 1927 26363 30221 1239061