145742121085 has 16 divisors (see below), whose sum is σ = 191046522240. Its totient is φ = 105851583040.

The previous prime is 145742121067. The next prime is 145742121089. The reversal of 145742121085 is 580121247541.

It is not a de Polignac number, because 145742121085 - 2²³ = 145733732477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145742121089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1742350 + ... + 1824079.

It is an arithmetic number, because the mean of its divisors is an integer number (11940407640).

Almost surely, 2^145742121085 is an apocalyptic number.

It is an amenable number.

145742121085 is a deficient number, since it is larger than the sum of its proper divisors (45304401155).

145742121085 is a wasteful number, since it uses less digits than its factorization.

145742121085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3567188.

The product of its (nonzero) digits is 89600, while the sum is 40.

The spelling of 145742121085 in words is "one hundred forty-five billion, seven hundred forty-two million, one hundred twenty-one thousand, eighty-five".