1305642450442 has 16 divisors (see below), whose sum is σ = 2136547232064. Its totient is φ = 593462340000.

The previous prime is 1305642450419. The next prime is 1305642450443. The reversal of 1305642450442 is 2440542465031.

It is a junction number, because it is equal to n+sod(n) for n = 1305642450395 and 1305642450404.

It is not an unprimeable number, because it can be changed into a prime (1305642450443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 643342 + ... + 1739302.

It is an arithmetic number, because the mean of its divisors is an integer number (133534202004).

Almost surely, 2^{1305642450442} is an apocalyptic number.

1305642450442 is a deficient number, since it is larger than the sum of its proper divisors (830904781622).

1305642450442 is a wasteful number, since it uses less digits than its factorization.

1305642450442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150125.

The product of its (nonzero) digits is 460800, while the sum is 40.

The spelling of 1305642450442 in words is "one trillion, three hundred five billion, six hundred forty-two million, four hundred fifty thousand, four hundred forty-two".