1143471 has 16 divisors (see below), whose sum is σ = 1845504. Its totient is φ = 614784.

The previous prime is 1143469. The next prime is 1143473. The reversal of 1143471 is 1743411.

It is an interprime number because it is at equal distance from previous prime (1143469) and next prime (1143473).

It is not a de Polignac number, because 1143471 - 2¹ = 1143469 is a prime.

It is a super-3 number, since 3×1143471³ = 4485353940702828333, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1245 + ... + 1958.

It is an arithmetic number, because the mean of its divisors is an integer number (115344).

2^1143471 is an apocalyptic number.

1143471 is a deficient number, since it is larger than the sum of its proper divisors (702033).

1143471 is a wasteful number, since it uses less digits than its factorization.

1143471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3230.

The product of its digits is 336, while the sum is 21.

The square root of 1143471 is about 1069.3320344963. The cubic root of 1143471 is about 104.5703074557.

Adding to 1143471 its reverse (1743411), we get a palindrome (2886882).

The spelling of 1143471 in words is "one million, one hundred forty-three thousand, four hundred seventy-one".