420733285191 has 12 divisors (see below), whose sum is σ = 613742945400. Its totient is φ = 277711738800.

The previous prime is 420733285169. The next prime is 420733285279. The reversal of 420733285191 is 191582337024.

It is a happy number.

420733285191 is a `hidden beast` number, since 42 + 0 + 73 + 3 + 28 + 519 + 1 = 666.

It is not a de Polignac number, because 420733285191 - 2⁹ = 420733284679 is a prime.

It is a super-2 number, since 2×420733285191² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420733286191) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 231425541 + ... + 231427358.

It is an arithmetic number, because the mean of its divisors is an integer number (51145245450).

Almost surely, 2^420733285191 is an apocalyptic number.

420733285191 is a deficient number, since it is larger than the sum of its proper divisors (193009660209).

420733285191 is a wasteful number, since it uses less digits than its factorization.

420733285191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462853006 (or 462853003 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 420733285191 in words is "four hundred twenty billion, seven hundred thirty-three million, two hundred eighty-five thousand, one hundred ninety-one".