1340024 has 16 divisors (see below), whose sum is σ = 2871600. Its totient is φ = 574272.

The previous prime is 1340021. The next prime is 1340033. The reversal of 1340024 is 4200431.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1339990 and 1340008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11909 + ... + 12020.

It is an arithmetic number, because the mean of its divisors is an integer number (179475).

2^1340024 is an apocalyptic number.

1340024 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1340024 is an abundant number, since it is smaller than the sum of its proper divisors (1531576).

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

1340024 is a wasteful number, since it uses less digits than its factorization.

1340024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23942 (or 23938 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 1340024 is about 1157.5940566537. The cubic root of 1340024 is about 110.2480353343.

Adding to 1340024 its reverse (4200431), we get a palindrome (5540455).

The spelling of 1340024 in words is "one million, three hundred forty thousand, twenty-four".