1461143 has 4 divisors (see below), whose sum is σ = 1467648. Its totient is φ = 1454640.

The previous prime is 1461139. The next prime is 1461151. The reversal of 1461143 is 3411641.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1461143 - 2² = 1461139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1461193) 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, 2903 + ... + 3368.

It is an arithmetic number, because the mean of its divisors is an integer number (366912).

2^1461143 is an apocalyptic number.

1461143 is a deficient number, since it is larger than the sum of its proper divisors (6505).

1461143 is an equidigital number, since it uses as much as digits as its factorization.

1461143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6504.

The product of its digits is 288, while the sum is 20.

The square root of 1461143 is about 1208.7774815904. Note that the first 3 decimals coincide. The cubic root of 1461143 is about 113.4743160913.

Adding to 1461143 its reverse (3411641), we get a palindrome (4872784).

The spelling of 1461143 in words is "one million, four hundred sixty-one thousand, one hundred forty-three".