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1020061 = 7145723
BaseRepresentation
bin11111001000010011101
31220211021001
43321002131
5230120221
633510301
711445640
oct3710235
91824231
101020061
11637429
12412391
132993b3
141c7a57
15152391
hexf909d

1020061 has 4 divisors (see below), whose sum is σ = 1165792. Its totient is φ = 874332.

The previous prime is 1020059. The next prime is 1020077. The reversal of 1020061 is 1600201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1020061 - 21 = 1020059 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 (1020001) 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 3 ways as a sum of consecutive naturals, for example, 72855 + ... + 72868.

It is an arithmetic number, because the mean of its divisors is an integer number (291448).

21020061 is an apocalyptic number.

It is an amenable number.

1020061 is a deficient number, since it is larger than the sum of its proper divisors (145731).

1020061 is an equidigital number, since it uses as much as digits as its factorization.

1020061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145730.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1020061 is about 1009.9806928848. The cubic root of 1020061 is about 100.6642775822.

Adding to 1020061 its reverse (1600201), we get a palindrome (2620262).

The spelling of 1020061 in words is "one million, twenty thousand, sixty-one".

Divisors: 1 7 145723 1020061