1143456 has 48 divisors (see below), whose sum is σ = 3082464. Its totient is φ = 370944.

The previous prime is 1143433. The next prime is 1143469. The reversal of 1143456 is 6543411.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3990 + ... + 4266.

It is an arithmetic number, because the mean of its divisors is an integer number (64218).

2^1143456 is an apocalyptic number.

1143456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1143456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1541232).

1143456 is an abundant number, since it is smaller than the sum of its proper divisors (1939008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1143456 is a wasteful number, since it uses less digits than its factorization.

1143456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333 (or 325 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 1143456 is about 1069.3250207491. The cubic root of 1143456 is about 104.5698502042.

Adding to 1143456 its reverse (6543411), we get a palindrome (7686867).

It can be divided in two parts, 114 and 3456, that added together give a triangular number (3570 = T₈₄).

The spelling of 1143456 in words is "one million, one hundred forty-three thousand, four hundred fifty-six".