420471486 has 40 divisors (see below), whose sum is σ = 949407624. Its totient is φ = 139080240.

The previous prime is 420471449. The next prime is 420471503. The reversal of 420471486 is 684174024.

It is a self number, because there is not a number n which added to its sum of digits gives 420471486.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11316 + ... + 31128.

Almost surely, 2^420471486 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420471486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (474703812).

420471486 is an abundant number, since it is smaller than the sum of its proper divisors (528936138).

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

420471486 is a wasteful number, since it uses less digits than its factorization.

420471486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19958 (or 19949 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 420471486 is about 20505.4013859763. The cubic root of 420471486 is about 749.1673639651.

It can be divided in two parts, 420 and 471486, that added together give a triangular number (471906 = T₉₇₁).

The spelling of 420471486 in words is "four hundred twenty million, four hundred seventy-one thousand, four hundred eighty-six".