5401021320 has 96 divisors (see below), whose sum is σ = 18477201600. Its totient is φ = 1364466816.

The previous prime is 5401021319. The next prime is 5401021349. The reversal of 5401021320 is 231201045.

5401021320 is a `hidden beast` number, since 540 + 102 + 1 + 3 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 5401021293 and 5401021302.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 387972 + ... + 401651.

It is an arithmetic number, because the mean of its divisors is an integer number (192470850).

Almost surely, 2^5401021320 is an apocalyptic number.

It is an amenable number.

5401021320 is an abundant number, since it is smaller than the sum of its proper divisors (13076180280).

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

5401021320 is a wasteful number, since it uses less digits than its factorization.

5401021320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789659 (or 789652 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 5401021320 is about 73491.6411573452. The cubic root of 5401021320 is about 1754.5212417997.

Adding to 5401021320 its reverse (231201045), we get a palindrome (5632222365).

The spelling of 5401021320 in words is "five billion, four hundred one million, twenty-one thousand, three hundred twenty".