1424040 has 32 divisors (see below), whose sum is σ = 4272480. Its totient is φ = 379712.

The previous prime is 1424023. The next prime is 1424041. The reversal of 1424040 is 404241.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (1424041) 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 7 ways as a sum of consecutive naturals, for example, 5814 + ... + 6053.

It is an arithmetic number, because the mean of its divisors is an integer number (133515).

2^1424040 is an apocalyptic number.

1424040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1424040 is an abundant number, since it is smaller than the sum of its proper divisors (2848440).

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

1424040 is a wasteful number, since it uses less digits than its factorization.

1424040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11881 (or 11877 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 1424040 is about 1193.3314711345. The cubic root of 1424040 is about 112.5055799701.

Adding to 1424040 its reverse (404241), we get a palindrome (1828281).

The spelling of 1424040 in words is "one million, four hundred twenty-four thousand, forty".