145444121 has 8 divisors (see below), whose sum is σ = 146512800. Its totient is φ = 144379648.

The previous prime is 145444093. The next prime is 145444127. The reversal of 145444121 is 121444541.

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

It is a cyclic number.

It is not a de Polignac number, because 145444121 - 2¹⁰ = 145443097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (145444127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101210 + ... + 102636.

It is an arithmetic number, because the mean of its divisors is an integer number (18314100).

Almost surely, 2^145444121 is an apocalyptic number.

It is an amenable number.

145444121 is a deficient number, since it is larger than the sum of its proper divisors (1068679).

145444121 is a wasteful number, since it uses less digits than its factorization.

145444121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2103.

The product of its digits is 2560, while the sum is 26.

The square root of 145444121 is about 12060.0216003123. The cubic root of 145444121 is about 525.8946149719.

Adding to 145444121 its reverse (121444541), we get a palindrome (266888662).

The spelling of 145444121 in words is "one hundred forty-five million, four hundred forty-four thousand, one hundred twenty-one".