142587907505 has 8 divisors (see below), whose sum is σ = 174005582400. Its totient is φ = 112136930416.

The previous prime is 142587907493. The next prime is 142587907573. The reversal of 142587907505 is 505709785241.

142587907505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142587907505 is a prime.

It is a super-2 number, since 2×142587907505² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 241674125 + ... + 241674714.

It is an arithmetic number, because the mean of its divisors is an integer number (21750697800).

Almost surely, 2^142587907505 is an apocalyptic number.

It is an amenable number.

142587907505 is a deficient number, since it is larger than the sum of its proper divisors (31417674895).

142587907505 is an equidigital number, since it uses as much as digits as its factorization.

142587907505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483348903.

The product of its (nonzero) digits is 3528000, while the sum is 53.

The spelling of 142587907505 in words is "one hundred forty-two billion, five hundred eighty-seven million, nine hundred seven thousand, five hundred five".