145042243201 has 4 divisors (see below), whose sum is σ = 151348427712. Its totient is φ = 138736058692.

The previous prime is 145042243183. The next prime is 145042243223. The reversal of 145042243201 is 102342240541.

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 a de Polignac number, because none of the positive numbers 2^k-145042243201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145042243201.

It is not an unprimeable number, because it can be changed into a prime (145042243901) 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 3 ways as a sum of consecutive naturals, for example, 3153092221 + ... + 3153092266.

It is an arithmetic number, because the mean of its divisors is an integer number (37837106928).

Almost surely, 2^145042243201 is an apocalyptic number.

It is an amenable number.

145042243201 is a deficient number, since it is larger than the sum of its proper divisors (6306184511).

145042243201 is an equidigital number, since it uses as much as digits as its factorization.

145042243201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6306184510.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 145042243201 its reverse (102342240541), we get a palindrome (247384483742).

The spelling of 145042243201 in words is "one hundred forty-five billion, forty-two million, two hundred forty-three thousand, two hundred one".