1443434121 has 64 divisors (see below), whose sum is σ = 2291138560. Its totient is φ = 896495040.

The previous prime is 1443434119. The next prime is 1443434137. The reversal of 1443434121 is 1214343441.

It is not a de Polignac number, because 1443434121 - 2¹ = 1443434119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1443434141) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3932880 + ... + 3933246.

It is an arithmetic number, because the mean of its divisors is an integer number (35799040).

Almost surely, 2^1443434121 is an apocalyptic number.

It is an amenable number.

1443434121 is a deficient number, since it is larger than the sum of its proper divisors (847704439).

1443434121 is a wasteful number, since it uses less digits than its factorization.

1443434121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571 (or 565 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 1443434121 is about 37992.5534940730. The cubic root of 1443434121 is about 1130.1401974484.

Adding to 1443434121 its reverse (1214343441), we get a palindrome (2657777562).

The spelling of 1443434121 in words is "one billion, four hundred forty-three million, four hundred thirty-four thousand, one hundred twenty-one".