1300042443 has 32 divisors (see below), whose sum is σ = 2049380352. Its totient is φ = 717350400.

The previous prime is 1300042441. The next prime is 1300042451. The reversal of 1300042443 is 3442400031.

It is not a de Polignac number, because 1300042443 - 2¹ = 1300042441 is a prime.

It is a super-2 number, since 2×1300042443² = 3380220707202816498, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1300042441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 337255 + ... + 341087.

It is an arithmetic number, because the mean of its divisors is an integer number (64043136).

Almost surely, 2^1300042443 is an apocalyptic number.

1300042443 is a deficient number, since it is larger than the sum of its proper divisors (749337909).

1300042443 is a wasteful number, since it uses less digits than its factorization.

1300042443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4395.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 1300042443 is about 36056.1013283466. The cubic root of 1300042443 is about 1091.4047603647.

Adding to 1300042443 its reverse (3442400031), we get a palindrome (4742442474).

The spelling of 1300042443 in words is "one billion, three hundred million, forty-two thousand, four hundred forty-three".