145331121 has 8 divisors (see below), whose sum is σ = 208680640. Its totient is φ = 89434512.

The previous prime is 145331119. The next prime is 145331129. The reversal of 145331121 is 121133541.

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

It is not a de Polignac number, because 145331121 - 2¹ = 145331119 is a prime.

It is a super-2 number, since 2×145331121² = 42242269462233282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145331129) 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, 1863181 + ... + 1863258.

It is an arithmetic number, because the mean of its divisors is an integer number (26085080).

Almost surely, 2^145331121 is an apocalyptic number.

It is an amenable number.

145331121 is a deficient number, since it is larger than the sum of its proper divisors (63349519).

145331121 is a wasteful number, since it uses less digits than its factorization.

145331121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3726455.

The product of its digits is 360, while the sum is 21.

The square root of 145331121 is about 12055.3357895996. The cubic root of 145331121 is about 525.7583851316.

Adding to 145331121 its reverse (121133541), we get a palindrome (266464662).

The spelling of 145331121 in words is "one hundred forty-five million, three hundred thirty-one thousand, one hundred twenty-one".