1020261 has 16 divisors (see below), whose sum is σ = 1520640. Its totient is φ = 603120.

The previous prime is 1020259. The next prime is 1020269. The reversal of 1020261 is 1620201.

It is not a de Polignac number, because 1020261 - 2¹ = 1020259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020269) 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 15 ways as a sum of consecutive naturals, for example, 1060 + ... + 1778.

It is an arithmetic number, because the mean of its divisors is an integer number (95040).

2^1020261 is an apocalyptic number.

1020261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1020261 is a deficient number, since it is larger than the sum of its proper divisors (500379).

1020261 is a wasteful number, since it uses less digits than its factorization.

1020261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1020261 is about 1010.0796998257. The cubic root of 1020261 is about 100.6708561234.

Adding to 1020261 its reverse (1620201), we get a palindrome (2640462).

The spelling of 1020261 in words is "one million, twenty thousand, two hundred sixty-one".