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1392041 = 7228409
BaseRepresentation
bin101010011110110101001
32121201112002
411103312221
5324021131
645500345
714555300
oct5236651
92551462
101392041
11870952
125716b5
133997c1
14283437
151c76cb
hex153da9

1392041 has 6 divisors (see below), whose sum is σ = 1619370. Its totient is φ = 1193136.

The previous prime is 1392007. The next prime is 1392089. The reversal of 1392041 is 1402931.

It can be written as a sum of positive squares in only one way, i.e., 1254400 + 137641 = 1120^2 + 371^2 .

It is not a de Polignac number, because 1392041 - 218 = 1129897 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1392541) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14156 + ... + 14253.

It is an arithmetic number, because the mean of its divisors is an integer number (269895).

21392041 is an apocalyptic number.

It is an amenable number.

1392041 is a deficient number, since it is larger than the sum of its proper divisors (227329).

1392041 is an equidigital number, since it uses as much as digits as its factorization.

1392041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28423 (or 28416 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1392041 is about 1179.8478715495. The cubic root of 1392041 is about 111.6564996560.

Adding to 1392041 its reverse (1402931), we get a palindrome (2794972).

The spelling of 1392041 in words is "one million, three hundred ninety-two thousand, forty-one".

Divisors: 1 7 49 28409 198863 1392041