1340205244 has 24 divisors (see below), whose sum is σ = 2681417088. Its totient is φ = 574158000.

The previous prime is 1340205187. The next prime is 1340205277. The reversal of 1340205244 is 4425020431.

It is a happy number.

It is a super-3 number, since 3×1340205244³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83667 + ... + 98389.

It is an arithmetic number, because the mean of its divisors is an integer number (111725712).

Almost surely, 2^1340205244 is an apocalyptic number.

1340205244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1340205244 is an abundant number, since it is smaller than the sum of its proper divisors (1341211844).

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

1340205244 is a wasteful number, since it uses less digits than its factorization.

1340205244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17985 (or 17983 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 1340205244 is about 36608.8137475117. The cubic root of 1340205244 is about 1102.5300561699.

Adding to 1340205244 its reverse (4425020431), we get a palindrome (5765225675).

The spelling of 1340205244 in words is "one billion, three hundred forty million, two hundred five thousand, two hundred forty-four".