1043440 has 20 divisors (see below), whose sum is σ = 2426184. Its totient is φ = 417344.

The previous prime is 1043401. The next prime is 1043453. The reversal of 1043440 is 443401.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a zygodrome in base 4.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6442 + ... + 6601.

2^1043440 is an apocalyptic number.

1043440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1043440 is an abundant number, since it is smaller than the sum of its proper divisors (1382744).

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

1043440 is a wasteful number, since it uses less digits than its factorization.

1043440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13056 (or 13050 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1043440 is about 1021.4891090951. The cubic root of 1043440 is about 101.4275247623.

Adding to 1043440 its reverse (443401), we get a palindrome (1486841).

The spelling of 1043440 in words is "one million, forty-three thousand, four hundred forty".