1340204020 has 24 divisors (see below), whose sum is σ = 2936795904. Its totient is φ = 512773536.

The previous prime is 1340204017. The next prime is 1340204029. The reversal of 1340204020 is 204020431.

1340204020 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1340204020² = 3592293630448320800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1340203985 and 1340204003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340204029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1456284 + ... + 1457203.

It is an arithmetic number, because the mean of its divisors is an integer number (122366496).

Almost surely, 2^1340204020 is an apocalyptic number.

1340204020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1340204020 is an abundant number, since it is smaller than the sum of its proper divisors (1596591884).

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

1340204020 is a wasteful number, since it uses less digits than its factorization.

1340204020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2913519 (or 2913517 counting only the distinct ones).

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

The square root of 1340204020 is about 36608.7970302221. The cubic root of 1340204020 is about 1102.5297205255.

Adding to 1340204020 its reverse (204020431), we get a palindrome (1544224451).

The spelling of 1340204020 in words is "one billion, three hundred forty million, two hundred four thousand, twenty".