985172512742 has 16 divisors (see below), whose sum is σ = 1612133682192. Its totient is φ = 447796463520.

The previous prime is 985172512717. The next prime is 985172512747. The reversal of 985172512742 is 247215271589.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985172512747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 695588 + ... + 1566584.

It is an arithmetic number, because the mean of its divisors is an integer number (100758355137).

Almost surely, 2^985172512742 is an apocalyptic number.

985172512742 is a deficient number, since it is larger than the sum of its proper divisors (626961169450).

985172512742 is a wasteful number, since it uses less digits than its factorization.

985172512742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922423.

The product of its digits is 2822400, while the sum is 53.

The spelling of 985172512742 in words is "nine hundred eighty-five billion, one hundred seventy-two million, five hundred twelve thousand, seven hundred forty-two".