420421340021335 has 4 divisors (see below), whose sum is σ = 504505608025608. Its totient is φ = 336337072017064.

The previous prime is 420421340021321. The next prime is 420421340021381. The reversal of 420421340021335 is 533120043124024.

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 420421340021335 - 2³³ = 420412750086743 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420421340021335.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42042134002129 + ... + 42042134002138.

It is an arithmetic number, because the mean of its divisors is an integer number (126126402006402).

Almost surely, 2^{420421340021335} is an apocalyptic number.

420421340021335 is a deficient number, since it is larger than the sum of its proper divisors (84084268004273).

420421340021335 is an equidigital number, since it uses as much as digits as its factorization.

420421340021335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84084268004272.

The product of its (nonzero) digits is 69120, while the sum is 34.

Adding to 420421340021335 its reverse (533120043124024), we get a palindrome (953541383145359).

The spelling of 420421340021335 in words is "four hundred twenty trillion, four hundred twenty-one billion, three hundred forty million, twenty-one thousand, three hundred thirty-five".