145244027 has 4 divisors (see below), whose sum is σ = 145321176. Its totient is φ = 145166880.

The previous prime is 145243991. The next prime is 145244041. The reversal of 145244027 is 720442541.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145244027 - 2¹⁰ = 145243003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145244527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35678 + ... + 39539.

It is an arithmetic number, because the mean of its divisors is an integer number (36330294).

Almost surely, 2^145244027 is an apocalyptic number.

145244027 is a deficient number, since it is larger than the sum of its proper divisors (77149).

145244027 is an equidigital number, since it uses as much as digits as its factorization.

145244027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77148.

The product of its (nonzero) digits is 8960, while the sum is 29.

The square root of 145244027 is about 12051.7229888510. The cubic root of 145244027 is about 525.6533386910.

Adding to 145244027 its reverse (720442541), we get a palindrome (865686568).

The spelling of 145244027 in words is "one hundred forty-five million, two hundred forty-four thousand, twenty-seven".