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1073021 = 1318191
BaseRepresentation
bin100000101111101111101
32000111220112
410011331331
5233314041
634555405
712056225
oct4057575
92014815
101073021
116731a4
12438b65
132b7531
141dd085
15162deb
hex105f7d

1073021 has 4 divisors (see below), whose sum is σ = 1081344. Its totient is φ = 1064700.

The previous prime is 1072999. The next prime is 1073053. The reversal of 1073021 is 1203701.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1203701 = 3493449.

It is a cyclic number.

It is not a de Polignac number, because 1073021 - 26 = 1072957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1072987 and 1073005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1073221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3965 + ... + 4226.

It is an arithmetic number, because the mean of its divisors is an integer number (270336).

It is a Poulet number, since it divides 21073020-1.

21073021 is an apocalyptic number.

It is an amenable number.

1073021 is a deficient number, since it is larger than the sum of its proper divisors (8323).

1073021 is an equidigital number, since it uses as much as digits as its factorization.

1073021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8322.

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 1073021 is about 1035.8672694897. The cubic root of 1073021 is about 102.3770804926.

Adding to 1073021 its reverse (1203701), we get a palindrome (2276722).

The spelling of 1073021 in words is "one million, seventy-three thousand, twenty-one".

Divisors: 1 131 8191 1073021