1403040 has 96 divisors (see below), whose sum is σ = 4596480. Its totient is φ = 359424.

The previous prime is 1403021. The next prime is 1403057. The reversal of 1403040 is 403041.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17721 + ... + 17799.

It is an arithmetic number, because the mean of its divisors is an integer number (47880).

2^1403040 is an apocalyptic number.

1403040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a pronic number, being equal to 1184×1185.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1403040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2298240).

1403040 is an abundant number, since it is smaller than the sum of its proper divisors (3193440).

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

1403040 is a wasteful number, since it uses less digits than its factorization.

1403040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 1403040 is about 1184.4998944702. The cubic root of 1403040 is about 111.9498074416.

Adding to 1403040 its reverse (403041), we get a palindrome (1806081).

Subtracting from 1403040 its reverse (403041), we obtain a palindrome (999999).

The spelling of 1403040 in words is "one million, four hundred three thousand, forty".