1340020 has 24 divisors (see below), whose sum is σ = 3070368. Its totient is φ = 487200.

The previous prime is 1340011. The next prime is 1340021. The reversal of 1340020 is 200431.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1339979 and 1340006.

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 7 ways as a sum of consecutive naturals, for example, 2826 + ... + 3265.

It is an arithmetic number, because the mean of its divisors is an integer number (127932).

2^1340020 is an apocalyptic number.

1340020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1340020 is an abundant number, since it is smaller than the sum of its proper divisors (1730348).

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

1340020 is a wasteful number, since it uses less digits than its factorization.

1340020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6111 (or 6109 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 1340020 is about 1157.5923289310. The cubic root of 1340020 is about 110.2479256367.

Adding to 1340020 its reverse (200431), we get a palindrome (1540451).

The spelling of 1340020 in words is "one million, three hundred forty thousand, twenty".