142445507217 has 8 divisors (see below), whose sum is σ = 204537138624. Its totient is φ = 87658773648.

The previous prime is 142445507207. The next prime is 142445507219. The reversal of 142445507217 is 712705544241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 142445507217 - 2¹² = 142445503121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142445507219) 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, 1826224413 + ... + 1826224490.

It is an arithmetic number, because the mean of its divisors is an integer number (25567142328).

Almost surely, 2^142445507217 is an apocalyptic number.

It is an amenable number.

142445507217 is a deficient number, since it is larger than the sum of its proper divisors (62091631407).

142445507217 is a wasteful number, since it uses less digits than its factorization.

142445507217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3652448919.

The product of its (nonzero) digits is 313600, while the sum is 42.

The spelling of 142445507217 in words is "one hundred forty-two billion, four hundred forty-five million, five hundred seven thousand, two hundred seventeen".