420241646523 has 8 divisors (see below), whose sum is σ = 560658328128. Its totient is φ = 279993031304.

The previous prime is 420241646509. The next prime is 420241646567. The reversal of 420241646523 is 325646142024.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 420241646523 - 2¹⁶ = 420241580987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420241646323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42010761 + ... + 42020762.

It is an arithmetic number, because the mean of its divisors is an integer number (70082291016).

Almost surely, 2^420241646523 is an apocalyptic number.

420241646523 is a deficient number, since it is larger than the sum of its proper divisors (140416681605).

420241646523 is a wasteful number, since it uses less digits than its factorization.

420241646523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84033193.

The product of its (nonzero) digits is 276480, while the sum is 39.

Adding to 420241646523 its reverse (325646142024), we get a palindrome (745887788547).

The spelling of 420241646523 in words is "four hundred twenty billion, two hundred forty-one million, six hundred forty-six thousand, five hundred twenty-three".