1305672242 has 16 divisors (see below), whose sum is σ = 2276233920. Its totient is φ = 550089168.

The previous prime is 1305672241. The next prime is 1305672271. The reversal of 1305672242 is 2422765031.

It is a junction number, because it is equal to n+sod(n) for n = 1305672199 and 1305672208.

It is not an unprimeable number, because it can be changed into a prime (1305672241) by changing a digit.

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, 789533 + ... + 791184.

It is an arithmetic number, because the mean of its divisors is an integer number (142264620).

Almost surely, 2^1305672242 is an apocalyptic number.

1305672242 is a deficient number, since it is larger than the sum of its proper divisors (970561678).

1305672242 is a wasteful number, since it uses less digits than its factorization.

1305672242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1580785.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 1305672242 is about 36134.0869816853. The cubic root of 1305672242 is about 1092.9779247299.

The spelling of 1305672242 in words is "one billion, three hundred five million, six hundred seventy-two thousand, two hundred forty-two".