145203122401 has 4 divisors (see below), whose sum is σ = 145755225792. Its totient is φ = 144651019012.

The previous prime is 145203122399. The next prime is 145203122423. The reversal of 145203122401 is 104221302541.

145203122401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 145203122401 - 2¹ = 145203122399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145203122501) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 276051301 + ... + 276051826.

It is an arithmetic number, because the mean of its divisors is an integer number (36438806448).

Almost surely, 2^145203122401 is an apocalyptic number.

It is an amenable number.

145203122401 is a deficient number, since it is larger than the sum of its proper divisors (552103391).

145203122401 is an equidigital number, since it uses as much as digits as its factorization.

145203122401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552103390.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 145203122401 its reverse (104221302541), we get a palindrome (249424424942).

The spelling of 145203122401 in words is "one hundred forty-five billion, two hundred three million, one hundred twenty-two thousand, four hundred one".