1305404142 has 32 divisors (see below), whose sum is σ = 2985158400. Its totient is φ = 372800448.

The previous prime is 1305404129. The next prime is 1305404147. The reversal of 1305404142 is 2414045031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305404147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105834 + ... + 117522.

It is an arithmetic number, because the mean of its divisors is an integer number (93286200).

Almost surely, 2^1305404142 is an apocalyptic number.

1305404142 is an abundant number, since it is smaller than the sum of its proper divisors (1679754258).

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

1305404142 is a wasteful number, since it uses less digits than its factorization.

1305404142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14360.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 1305404142 is about 36130.3769977563. The cubic root of 1305404142 is about 1092.9031107936.

Adding to 1305404142 its reverse (2414045031), we get a palindrome (3719449173).

The spelling of 1305404142 in words is "one billion, three hundred five million, four hundred four thousand, one hundred forty-two".