1145434421 has 4 divisors (see below), whose sum is σ = 1146366144. Its totient is φ = 1144502700.

The previous prime is 1145434379. The next prime is 1145434441. The reversal of 1145434421 is 1244345411.

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 1145434421 - 2¹⁴ = 1145418037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145434441) 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, 464015 + ... + 466476.

It is an arithmetic number, because the mean of its divisors is an integer number (286591536).

Almost surely, 2^1145434421 is an apocalyptic number.

It is an amenable number.

1145434421 is a deficient number, since it is larger than the sum of its proper divisors (931723).

1145434421 is an equidigital number, since it uses as much as digits as its factorization.

1145434421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931722.

The product of its digits is 7680, while the sum is 29.

The square root of 1145434421 is about 33844.2671807206. The cubic root of 1145434421 is about 1046.3012478258.

Adding to 1145434421 its reverse (1244345411), we get a palindrome (2389779832).

The spelling of 1145434421 in words is "one billion, one hundred forty-five million, four hundred thirty-four thousand, four hundred twenty-one".