145102140305 has 12 divisors (see below), whose sum is σ = 174623649372. Its totient is φ = 115748614080.

The previous prime is 145102140301. The next prime is 145102140341. The reversal of 145102140305 is 503041201541.

It can be written as a sum of positive squares in 6 ways, for example, as 756855121 + 144345285184 = 27511^2 + 379928^2 .

It is not a de Polignac number, because 145102140305 - 2² = 145102140301 is a prime.

It is a super-2 number, since 2×145102140305² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145102140301) 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 11 ways as a sum of consecutive naturals, for example, 489875 + ... + 728135.

It is an arithmetic number, because the mean of its divisors is an integer number (14551970781).

Almost surely, 2^145102140305 is an apocalyptic number.

It is an amenable number.

145102140305 is a deficient number, since it is larger than the sum of its proper divisors (29521509067).

145102140305 is an frugal number, since it uses more digits than its factorization.

145102140305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238964 (or 238615 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 145102140305 its reverse (503041201541), we get a palindrome (648143341846).

The spelling of 145102140305 in words is "one hundred forty-five billion, one hundred two million, one hundred forty thousand, three hundred five".