1344140020 has 24 divisors (see below), whose sum is σ = 2988735624. Its totient is φ = 506029056.

The previous prime is 1344139999. The next prime is 1344140027. The reversal of 1344140020 is 200414431.

It can be written as a sum of positive squares in 4 ways, for example, as 726518116 + 617621904 = 26954^2 + 24852^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1344140020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1344140027) 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, 1976337 + ... + 1977016.

It is an arithmetic number, because the mean of its divisors is an integer number (124530651).

Almost surely, 2^1344140020 is an apocalyptic number.

1344140020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1344140020 is an abundant number, since it is smaller than the sum of its proper divisors (1644595604).

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

1344140020 is a wasteful number, since it uses less digits than its factorization.

1344140020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3953379 (or 3953377 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1344140020 is about 36662.5151892229. The cubic root of 1344140020 is about 1103.6079930870.

Adding to 1344140020 its reverse (200414431), we get a palindrome (1544554451).

The spelling of 1344140020 in words is "one billion, three hundred forty-four million, one hundred forty thousand, twenty".