1040291 has 8 divisors (see below), whose sum is σ = 1195104. Its totient is φ = 887040.

The previous prime is 1040227. The next prime is 1040311. The reversal of 1040291 is 1920401.

It is a happy number.

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

It is not a de Polignac number, because 1040291 - 2⁶ = 1040227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1040191) 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, 2261 + ... + 2681.

It is an arithmetic number, because the mean of its divisors is an integer number (149388).

2^1040291 is an apocalyptic number.

1040291 is a deficient number, since it is larger than the sum of its proper divisors (154813).

1040291 is an equidigital number, since it uses as much as digits as its factorization.

1040291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1040291 is about 1019.9465672279. The cubic root of 1040291 is about 101.3253891606.

Adding to 1040291 its reverse (1920401), we get a palindrome (2960692).

It can be divided in two parts, 1040 and 291, that added together give a palindrome (1331).

The spelling of 1040291 in words is "one million, forty thousand, two hundred ninety-one".