420340140403 has 4 divisors (see below), whose sum is σ = 425404479528. Its totient is φ = 415275801280.

The previous prime is 420340140391. The next prime is 420340140431. The reversal of 420340140403 is 304041043024.

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

It is a cyclic number.

It is not a de Polignac number, because 420340140403 - 2²⁹ = 419803269491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420340110403) 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, 2532169438 + ... + 2532169603.

It is an arithmetic number, because the mean of its divisors is an integer number (106351119882).

Almost surely, 2^420340140403 is an apocalyptic number.

420340140403 is a deficient number, since it is larger than the sum of its proper divisors (5064339125).

420340140403 is an equidigital number, since it uses as much as digits as its factorization.

420340140403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5064339124.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 420340140403 its reverse (304041043024), we get a palindrome (724381183427).

The spelling of 420340140403 in words is "four hundred twenty billion, three hundred forty million, one hundred forty thousand, four hundred three".