420324340253 has 4 divisors (see below), whose sum is σ = 420439912860. Its totient is φ = 420208767648.

The previous prime is 420324340147. The next prime is 420324340259. The reversal of 420324340253 is 352043423024.

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

It can be written as a sum of positive squares in 2 ways, for example, as 101865020569 + 318459319684 = 319163^2 + 564322^2 .

It is a cyclic number.

It is not a de Polignac number, because 420324340253 - 2⁸ = 420324339997 is a prime.

It is a super-2 number, since 2×420324340253² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420324340259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57780848 + ... + 57788121.

It is an arithmetic number, because the mean of its divisors is an integer number (105109978215).

Almost surely, 2^420324340253 is an apocalyptic number.

It is an amenable number.

420324340253 is a deficient number, since it is larger than the sum of its proper divisors (115572607).

420324340253 is a wasteful number, since it uses less digits than its factorization.

420324340253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115572606.

The product of its (nonzero) digits is 69120, while the sum is 32.

Adding to 420324340253 its reverse (352043423024), we get a palindrome (772367763277).

The spelling of 420324340253 in words is "four hundred twenty billion, three hundred twenty-four million, three hundred forty thousand, two hundred fifty-three".