1340044100 has 18 divisors (see below), whose sum is σ = 2907895914. Its totient is φ = 536017600.

The previous prime is 1340044087. The next prime is 1340044117. The reversal of 1340044100 is 14400431.

It can be written as a sum of positive squares in 3 ways, for example, as 259081216 + 1080962884 = 16096^2 + 32878^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 6700121 + ... + 6700320.

It is an arithmetic number, because the mean of its divisors is an integer number (161549773).

Almost surely, 2^1340044100 is an apocalyptic number.

1340044100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1340044100 is an abundant number, since it is smaller than the sum of its proper divisors (1567851814).

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

1340044100 is a wasteful number, since it uses less digits than its factorization.

1340044100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13400455 (or 13400448 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1340044100 is about 36606.6127905874. The cubic root of 1340044100 is about 1102.4858656189.

Adding to 1340044100 its reverse (14400431), we get a palindrome (1354444531).

The spelling of 1340044100 in words is "one billion, three hundred forty million, forty-four thousand, one hundred".