420651500 has 48 divisors (see below), whose sum is σ = 920730720. Its totient is φ = 167889600.

The previous prime is 420651481. The next prime is 420651503. The reversal of 420651500 is 5156024.

It is not an unprimeable number, because it can be changed into a prime (420651503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 392966 + ... + 394034.

It is an arithmetic number, because the mean of its divisors is an integer number (19181890).

Almost surely, 2^420651500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420651500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (460365360).

420651500 is an abundant number, since it is smaller than the sum of its proper divisors (500079220).

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

420651500 is a wasteful number, since it uses less digits than its factorization.

420651500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1875 (or 1863 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 420651500 is about 20509.7903451010. The cubic root of 420651500 is about 749.2742609265.

The spelling of 420651500 in words is "four hundred twenty million, six hundred fifty-one thousand, five hundred".