145241121 has 4 divisors (see below), whose sum is σ = 193654832. Its totient is φ = 96827412.

The previous prime is 145241101. The next prime is 145241123. The reversal of 145241121 is 121142541.

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 not a de Polignac number, because 145241121 - 2⁷ = 145240993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145241123) 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, 24206851 + ... + 24206856.

It is an arithmetic number, because the mean of its divisors is an integer number (48413708).

Almost surely, 2^145241121 is an apocalyptic number.

It is an amenable number.

145241121 is a deficient number, since it is larger than the sum of its proper divisors (48413711).

145241121 is an equidigital number, since it uses as much as digits as its factorization.

145241121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48413710.

The product of its digits is 320, while the sum is 21.

The square root of 145241121 is about 12051.6024245741. The cubic root of 145241121 is about 525.6498329615.

Adding to 145241121 its reverse (121142541), we get a palindrome (266383662).

The spelling of 145241121 in words is "one hundred forty-five million, two hundred forty-one thousand, one hundred twenty-one".