1305140021334 has 24 divisors (see below), whose sum is σ = 2827863528672. Its totient is φ = 435037420080.

The previous prime is 1305140021323. The next prime is 1305140021377. The reversal of 1305140021334 is 4331200415031.

It is a happy number.

1305140021334 is a `hidden beast` number, since 1 + 305 + 1 + 4 + 0 + 0 + 21 + 334 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1305140021298 and 1305140021307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 126867 + ... + 1620609.

It is an arithmetic number, because the mean of its divisors is an integer number (117827647028).

Almost surely, 2^{1305140021334} is an apocalyptic number.

1305140021334 is an abundant number, since it is smaller than the sum of its proper divisors (1522723507338).

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

1305140021334 is a wasteful number, since it uses less digits than its factorization.

1305140021334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1542292 (or 1542289 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 1305140021334 its reverse (4331200415031), we get a palindrome (5636340436365).

The spelling of 1305140021334 in words is "one trillion, three hundred five billion, one hundred forty million, twenty-one thousand, three hundred thirty-four".