1143451 has 4 divisors (see below), whose sum is σ = 1146600. Its totient is φ = 1140304.

The previous prime is 1143433. The next prime is 1143469. The reversal of 1143451 is 1543411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1543411 = 431 ⋅3581.

It is an interprime number because it is at equal distance from previous prime (1143433) and next prime (1143469).

It is a cyclic number.

It is not a de Polignac number, because 1143451 - 2¹⁷ = 1012379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143481) 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 3 ways as a sum of consecutive naturals, for example, 946 + ... + 1783.

It is an arithmetic number, because the mean of its divisors is an integer number (286650).

2^1143451 is an apocalyptic number.

1143451 is a deficient number, since it is larger than the sum of its proper divisors (3149).

1143451 is an equidigital number, since it uses as much as digits as its factorization.

1143451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3148.

The product of its digits is 240, while the sum is 19.

The square root of 1143451 is about 1069.3226828231. The cubic root of 1143451 is about 104.5696977861.

Adding to 1143451 its reverse (1543411), we get a palindrome (2686862).

The spelling of 1143451 in words is "one million, one hundred forty-three thousand, four hundred fifty-one".