1305240142 has 16 divisors (see below), whose sum is σ = 1978826112. Its totient is φ = 645648120.

The previous prime is 1305240121. The next prime is 1305240173. The reversal of 1305240142 is 2410425031.

It is a congruent number.

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, 172417 + ... + 179827.

It is an arithmetic number, because the mean of its divisors is an integer number (123676632).

Almost surely, 2^1305240142 is an apocalyptic number.

1305240142 is a deficient number, since it is larger than the sum of its proper divisors (673585970).

1305240142 is a wasteful number, since it uses less digits than its factorization.

1305240142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8343.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1305240142 is about 36128.1073680867. The cubic root of 1305240142 is about 1092.8573411577.

Adding to 1305240142 its reverse (2410425031), we get a palindrome (3715665173).

The spelling of 1305240142 in words is "one billion, three hundred five million, two hundred forty thousand, one hundred forty-two".