1420043545 has 16 divisors (see below), whose sum is σ = 1726038720. Its totient is φ = 1121452864.

The previous prime is 1420043533. The next prime is 1420043549. The reversal of 1420043545 is 5453400241.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1420043545 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1420043549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152226 + ... + 161284.

It is an arithmetic number, because the mean of its divisors is an integer number (107877420).

Almost surely, 2^1420043545 is an apocalyptic number.

It is an amenable number.

1420043545 is a deficient number, since it is larger than the sum of its proper divisors (305995175).

1420043545 is a wasteful number, since it uses less digits than its factorization.

1420043545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9464.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 1420043545 is about 37683.4651405626. The cubic root of 1420043545 is about 1124.0023537414.

Adding to 1420043545 its reverse (5453400241), we get a palindrome (6873443786).

The spelling of 1420043545 in words is "one billion, four hundred twenty million, forty-three thousand, five hundred forty-five".