1020291 has 8 divisors (see below), whose sum is σ = 1367040. Its totient is φ = 676872.

The previous prime is 1020269. The next prime is 1020293. The reversal of 1020291 is 1920201.

It is a happy number.

1020291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1020291 - 2⁵ = 1020259 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1020291.

It is not an unprimeable number, because it can be changed into a prime (1020293) 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, 6 + ... + 1428.

It is an arithmetic number, because the mean of its divisors is an integer number (170880).

2^1020291 is an apocalyptic number.

1020291 is a deficient number, since it is larger than the sum of its proper divisors (346749).

1020291 is a wasteful number, since it uses less digits than its factorization.

1020291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1020291 is about 1010.0945500298. The cubic root of 1020291 is about 100.6718428304.

Adding to 1020291 its sum of digits (15), we get a triangular number (1020306 = T₁₄₂₈).

Adding to 1020291 its reverse (1920201), we get a palindrome (2940492).

It can be divided in two parts, 10 and 20291, that added together give a triangular number (20301 = T₂₀₁).

The spelling of 1020291 in words is "one million, twenty thousand, two hundred ninety-one".