145121041231105 has 8 divisors (see below), whose sum is σ = 177000089633064. Its totient is φ = 114193606214400.

The previous prime is 145121041231051. The next prime is 145121041231109. The reversal of 145121041231105 is 501132140121541.

It can be written as a sum of positive squares in 4 ways, for example, as 5677983653904 + 139443057577201 = 2382852^2 + 11808601^2 .

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

It is not a de Polignac number, because 145121041231105 - 2¹¹ = 145121041229057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145121041231109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237903345976 + ... + 237903346585.

It is an arithmetic number, because the mean of its divisors is an integer number (22125011204133).

Almost surely, 2^{145121041231105} is an apocalyptic number.

It is an amenable number.

145121041231105 is a deficient number, since it is larger than the sum of its proper divisors (31879048401959).

145121041231105 is an equidigital number, since it uses as much as digits as its factorization.

145121041231105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475806692627.

The product of its (nonzero) digits is 4800, while the sum is 31.

Adding to 145121041231105 its reverse (501132140121541), we get a palindrome (646253181352646).

The spelling of 145121041231105 in words is "one hundred forty-five trillion, one hundred twenty-one billion, forty-one million, two hundred thirty-one thousand, one hundred five".