420210220623 has 8 divisors (see below), whose sum is σ = 560285942448. Its totient is φ = 280137322944.

The previous prime is 420210220589. The next prime is 420210220681. The reversal of 420210220623 is 326022012024.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 420210220623 - 2¹⁸ = 420209958479 is a prime.

It is a super-3 number, since 3×420210220623³ (a number of 36 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 420210220593 and 420210220602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420210220123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330286 + ... + 974427.

It is an arithmetic number, because the mean of its divisors is an integer number (70035742806).

Almost surely, 2^420210220623 is an apocalyptic number.

420210220623 is a deficient number, since it is larger than the sum of its proper divisors (140075721825).

420210220623 is a wasteful number, since it uses less digits than its factorization.

420210220623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412073.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 420210220623 its reverse (326022012024), we get a palindrome (746232232647).

The spelling of 420210220623 in words is "four hundred twenty billion, two hundred ten million, two hundred twenty thousand, six hundred twenty-three".