1420145443 has 4 divisors (see below), whose sum is σ = 1494889960. Its totient is φ = 1345400928.

The previous prime is 1420145437. The next prime is 1420145449. The reversal of 1420145443 is 3445410241.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1420145437) and next prime (1420145449).

It is a cyclic number.

It is not a de Polignac number, because 1420145443 - 2⁵ = 1420145411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1420145449) 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, 37372230 + ... + 37372267.

It is an arithmetic number, because the mean of its divisors is an integer number (373722490).

Almost surely, 2^1420145443 is an apocalyptic number.

1420145443 is a deficient number, since it is larger than the sum of its proper divisors (74744517).

1420145443 is an equidigital number, since it uses as much as digits as its factorization.

1420145443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74744516.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 1420145443 is about 37684.8171416553. The cubic root of 1420145443 is about 1124.0292380936.

Adding to 1420145443 its reverse (3445410241), we get a palindrome (4865555684).

The spelling of 1420145443 in words is "one billion, four hundred twenty million, one hundred forty-five thousand, four hundred forty-three".