5421135540 has 144 divisors (see below), whose sum is σ = 15814915200. Its totient is φ = 1387411200.

The previous prime is 5421135521. The next prime is 5421135541. The reversal of 5421135540 is 455311245.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 5421135498 and 5421135507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5421135541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8591025 + ... + 8591655.

It is an arithmetic number, because the mean of its divisors is an integer number (109825800).

Almost surely, 2^5421135540 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 5421135540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7907457600).

5421135540 is an abundant number, since it is smaller than the sum of its proper divisors (10393779660).

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

5421135540 is a wasteful number, since it uses less digits than its factorization.

5421135540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854 (or 821 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 5421135540 is about 73628.3609759174. The cubic root of 5421135540 is about 1756.6965777298.

Adding to 5421135540 its reverse (455311245), we get a palindrome (5876446785).

The spelling of 5421135540 in words is "five billion, four hundred twenty-one million, one hundred thirty-five thousand, five hundred forty".