420603540 has 96 divisors (see below), whose sum is σ = 1368079104. Its totient is φ = 94556160.

The previous prime is 420603529. The next prime is 420603541. The reversal of 420603540 is 45306024.

It is a self number, because there is not a number n which added to its sum of digits gives 420603540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420603541) 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 31 ways as a sum of consecutive naturals, for example, 17412 + ... + 33828.

It is an arithmetic number, because the mean of its divisors is an integer number (14250824).

Almost surely, 2^420603540 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 420603540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (684039552).

420603540 is an abundant number, since it is smaller than the sum of its proper divisors (947475564).

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

420603540 is a wasteful number, since it uses less digits than its factorization.

420603540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16497 (or 16495 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 420603540 is about 20508.6211140584. The cubic root of 420603540 is about 749.2457840208.

Adding to 420603540 its reverse (45306024), we get a palindrome (465909564).

The spelling of 420603540 in words is "four hundred twenty million, six hundred three thousand, five hundred forty".