420499380 has 144 divisors (see below), whose sum is σ = 1379863296. Its totient is φ = 95397120.

The previous prime is 420499379. The next prime is 420499411. The reversal of 420499380 is 83994024.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 461125 + ... + 462035.

It is an arithmetic number, because the mean of its divisors is an integer number (9582384).

Almost surely, 2^420499380 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 420499380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (689931648).

420499380 is an abundant number, since it is smaller than the sum of its proper divisors (959363916).

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

420499380 is a wasteful number, since it uses less digits than its factorization.

420499380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094 (or 1085 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 420499380 is about 20506.0815369490. The cubic root of 420499380 is about 749.1839301398.

The spelling of 420499380 in words is "four hundred twenty million, four hundred ninety-nine thousand, three hundred eighty".