1301121340 has 24 divisors (see below), whose sum is σ = 2769787440. Its totient is φ = 513318528.

The previous prime is 1301121331. The next prime is 1301121343. The reversal of 1301121340 is 431211031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1301121343) 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, 444130 + ... + 447049.

It is an arithmetic number, because the mean of its divisors is an integer number (115407810).

Almost surely, 2^1301121340 is an apocalyptic number.

1301121340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1301121340 is an abundant number, since it is smaller than the sum of its proper divisors (1468666100).

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

1301121340 is a wasteful number, since it uses less digits than its factorization.

1301121340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891261 (or 891259 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1301121340 is about 36071.0595907578. The cubic root of 1301121340 is about 1091.7065935193.

Adding to 1301121340 its reverse (431211031), we get a palindrome (1732332371).

The spelling of 1301121340 in words is "one billion, three hundred one million, one hundred twenty-one thousand, three hundred forty".