1420051543 has 4 divisors (see below), whose sum is σ = 1423016640. Its totient is φ = 1417086448.

The previous prime is 1420051537. The next prime is 1420051637. The reversal of 1420051543 is 3451500241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3451500241 = 7 ⋅493071463.

It is a cyclic number.

It is not a de Polignac number, because 1420051543 - 2⁵ = 1420051511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420001543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1481830 + ... + 1482787.

It is an arithmetic number, because the mean of its divisors is an integer number (355754160).

Almost surely, 2^1420051543 is an apocalyptic number.

1420051543 is a deficient number, since it is larger than the sum of its proper divisors (2965097).

1420051543 is an equidigital number, since it uses as much as digits as its factorization.

1420051543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2965096.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1420051543 is about 37683.5712612274. The cubic root of 1420051543 is about 1124.0044639476.

Adding to 1420051543 its reverse (3451500241), we get a palindrome (4871551784).

The spelling of 1420051543 in words is "one billion, four hundred twenty million, fifty-one thousand, five hundred forty-three".