405030525420 has 192 divisors, whose sum is σ = 1194736435200. Its totient is φ = 102396856320.

The previous prime is 405030525379. The next prime is 405030525443. The reversal of 405030525420 is 24525030504.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18032637 + ... + 18055083.

It is an arithmetic number, because the mean of its divisors is an integer number (6222585600).

Almost surely, 2^405030525420 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 405030525420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (597368217600).

405030525420 is an abundant number, since it is smaller than the sum of its proper divisors (789705909780).

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

405030525420 is a wasteful number, since it uses less digits than its factorization.

405030525420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22688 (or 22686 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 30.

Adding to 405030525420 its reverse (24525030504), we get a palindrome (429555555924).

The spelling of 405030525420 in words is "four hundred five billion, thirty million, five hundred twenty-five thousand, four hundred twenty".