1491141 has 4 divisors (see below), whose sum is σ = 1988192. Its totient is φ = 994092.

The previous prime is 1491109. The next prime is 1491157. The reversal of 1491141 is 1411941.

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: 1411941 = 3 ⋅470647.

It is not a de Polignac number, because 1491141 - 2⁵ = 1491109 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1491041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248521 + ... + 248526.

It is an arithmetic number, because the mean of its divisors is an integer number (497048).

2^1491141 is an apocalyptic number.

It is an amenable number.

1491141 is a deficient number, since it is larger than the sum of its proper divisors (497051).

1491141 is an equidigital number, since it uses as much as digits as its factorization.

1491141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497050.

The product of its digits is 144, while the sum is 21.

The square root of 1491141 is about 1221.1228439432. The cubic root of 1491141 is about 114.2456230657.

The spelling of 1491141 in words is "one million, four hundred ninety-one thousand, one hundred forty-one".