1145421233 has 4 divisors (see below), whose sum is σ = 1249550448. Its totient is φ = 1041292020.

The previous prime is 1145421227. The next prime is 1145421239. The reversal of 1145421233 is 3321245411.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (1145421227) and next prime (1145421239).

It is a cyclic number.

It is not a de Polignac number, because 1145421233 - 2⁶ = 1145421169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145421239) 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, 52064591 + ... + 52064612.

It is an arithmetic number, because the mean of its divisors is an integer number (312387612).

Almost surely, 2^1145421233 is an apocalyptic number.

It is an amenable number.

1145421233 is a deficient number, since it is larger than the sum of its proper divisors (104129215).

1145421233 is a wasteful number, since it uses less digits than its factorization.

1145421233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104129214.

The product of its digits is 2880, while the sum is 26.

The square root of 1145421233 is about 33844.0723465720. The cubic root of 1145421233 is about 1046.2972322681.

Adding to 1145421233 its reverse (3321245411), we get a palindrome (4466666644).

The spelling of 1145421233 in words is "one billion, one hundred forty-five million, four hundred twenty-one thousand, two hundred thirty-three".