420041453440 has 384 divisors, whose sum is σ = 1185435064800. Its totient is φ = 141896466432.

The previous prime is 420041453437. The next prime is 420041453441. The reversal of 420041453440 is 44354140024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420041453441) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 754113642 + ... + 754114198.

Almost surely, 2^420041453440 is an apocalyptic number.

420041453440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420041453440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (592717532400).

420041453440 is an abundant number, since it is smaller than the sum of its proper divisors (765393611360).

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

420041453440 is a wasteful number, since it uses less digits than its factorization.

420041453440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902 (or 883 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 420041453440 its reverse (44354140024), we get a palindrome (464395593464).

The spelling of 420041453440 in words is "four hundred twenty billion, forty-one million, four hundred fifty-three thousand, four hundred forty".