1442936443 has 4 divisors (see below), whose sum is σ = 1553931568. Its totient is φ = 1331941320.

The previous prime is 1442936419. The next prime is 1442936459. The reversal of 1442936443 is 3446392441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3446392441 = 151 ⋅22823791.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1442936443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1442936396 and 1442936405.

It is not an unprimeable number, because it can be changed into a prime (1442936543) 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, 55497543 + ... + 55497568.

It is an arithmetic number, because the mean of its divisors is an integer number (388482892).

Almost surely, 2^1442936443 is an apocalyptic number.

1442936443 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1442936443 is a deficient number, since it is larger than the sum of its proper divisors (110995125).

1442936443 is a wasteful number, since it uses less digits than its factorization.

1442936443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110995124.

The product of its digits is 248832, while the sum is 40.

The square root of 1442936443 is about 37986.0032511977. The cubic root of 1442936443 is about 1130.0102964577.

The spelling of 1442936443 in words is "one billion, four hundred forty-two million, nine hundred thirty-six thousand, four hundred forty-three".