420217250090 has 32 divisors (see below), whose sum is σ = 873692339904. Its totient is φ = 143817667840.

The previous prime is 420217250017. The next prime is 420217250093. The reversal of 420217250090 is 90052712024.

It is not an unprimeable number, because it can be changed into a prime (420217250093) 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 15 ways as a sum of consecutive naturals, for example, 112355684 + ... + 112359423.

It is an arithmetic number, because the mean of its divisors is an integer number (27302885622).

Almost surely, 2^420217250090 is an apocalyptic number.

420217250090 is an abundant number, since it is smaller than the sum of its proper divisors (453475089814).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420217250090 is a wasteful number, since it uses less digits than its factorization.

420217250090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224715142.

The product of its (nonzero) digits is 10080, while the sum is 32.

The spelling of 420217250090 in words is "four hundred twenty billion, two hundred seventeen million, two hundred fifty thousand, ninety".