1145421241 has 4 divisors (see below), whose sum is σ = 1146713472. Its totient is φ = 1144129012.

The previous prime is 1145421239. The next prime is 1145421293. The reversal of 1145421241 is 1421245411.

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 not a de Polignac number, because 1145421241 - 2¹ = 1145421239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145421941) 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, 644785 + ... + 646558.

It is an arithmetic number, because the mean of its divisors is an integer number (286678368).

Almost surely, 2^1145421241 is an apocalyptic number.

It is an amenable number.

1145421241 is a deficient number, since it is larger than the sum of its proper divisors (1292231).

1145421241 is an equidigital number, since it uses as much as digits as its factorization.

1145421241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292230.

The product of its digits is 1280, while the sum is 25.

The square root of 1145421241 is about 33844.0724647611. The cubic root of 1145421241 is about 1046.2972347040.

Adding to 1145421241 its reverse (1421245411), we get a palindrome (2566666652).

The spelling of 1145421241 in words is "one billion, one hundred forty-five million, four hundred twenty-one thousand, two hundred forty-one".