5420505040 has 80 divisors (see below), whose sum is σ = 13154064336. Its totient is φ = 2075340800.

The previous prime is 5420505037. The next prime is 5420505047. The reversal of 5420505040 is 405050245.

It can be written as a sum of positive squares in 8 ways, for example, as 1505750416 + 3914754624 = 38804^2 + 62568^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 5420504996 and 5420505014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5420505047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158250 + ... + 189430.

Almost surely, 2^5420505040 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 5420505040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6577032168).

5420505040 is an abundant number, since it is smaller than the sum of its proper divisors (7733559296).

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

5420505040 is a wasteful number, since it uses less digits than its factorization.

5420505040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31288 (or 31282 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 5420505040 is about 73624.0792132574. The cubic root of 5420505040 is about 1756.6284714493.

Adding to 5420505040 its reverse (405050245), we get a palindrome (5825555285).

The spelling of 5420505040 in words is "five billion, four hundred twenty million, five hundred five thousand, forty".