1380240140 has 24 divisors (see below), whose sum is σ = 2901846192. Its totient is φ = 551459520.

The previous prime is 1380240139. The next prime is 1380240179. The reversal of 1380240140 is 410420831.

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, 21806 + ... + 56885.

It is an arithmetic number, because the mean of its divisors is an integer number (120910258).

Almost surely, 2^1380240140 is an apocalyptic number.

1380240140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1380240140 is an abundant number, since it is smaller than the sum of its proper divisors (1521606052).

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

1380240140 is a wasteful number, since it uses less digits than its factorization.

1380240140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79577 (or 79575 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 1380240140 is about 37151.5832771633. The cubic root of 1380240140 is about 1113.4008566582.

Adding to 1380240140 its reverse (410420831), we get a palindrome (1790660971).

The spelling of 1380240140 in words is "one billion, three hundred eighty million, two hundred forty thousand, one hundred forty".