1305540042 has 16 divisors (see below), whose sum is σ = 2681650272. Its totient is φ = 423418320.

The previous prime is 1305540037. The next prime is 1305540059. The reversal of 1305540042 is 2400455031.

It is a junction number, because it is equal to n+sod(n) for n = 1305539994 and 1305540021.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2940184 + ... + 2940627.

It is an arithmetic number, because the mean of its divisors is an integer number (167603142).

Almost surely, 2^1305540042 is an apocalyptic number.

1305540042 is an abundant number, since it is smaller than the sum of its proper divisors (1376110230).

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

1305540042 is a wasteful number, since it uses less digits than its factorization.

1305540042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5880853.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 1305540042 is about 36132.2576377397. The cubic root of 1305540042 is about 1092.9410352887.

Adding to 1305540042 its reverse (2400455031), we get a palindrome (3705995073).

The spelling of 1305540042 in words is "one billion, three hundred five million, five hundred forty thousand, forty-two".