420139849584 has 320 divisors, whose sum is σ = 1351280623616. Its totient is φ = 109531118592.

The previous prime is 420139849579. The next prime is 420139849603. The reversal of 420139849584 is 485948931024.

It is a super-2 number, since 2×420139849584² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 170302719 + ... + 170305185.

Almost surely, 2^420139849584 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 420139849584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (675640311808).

420139849584 is an abundant number, since it is smaller than the sum of its proper divisors (931140774032).

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

420139849584 is a wasteful number, since it uses less digits than its factorization.

420139849584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2932 (or 2926 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 57.

The spelling of 420139849584 in words is "four hundred twenty billion, one hundred thirty-nine million, eight hundred forty-nine thousand, five hundred eighty-four".