405204542250 has 128 divisors (see below), whose sum is σ = 1019199946752. Its totient is φ = 107223080000.

The previous prime is 405204542179. The next prime is 405204542257. The reversal of 405204542250 is 52245402504.

It is not an unprimeable number, because it can be changed into a prime (405204542257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 61737469 + ... + 61744031.

It is an arithmetic number, because the mean of its divisors is an integer number (7962499584).

Almost surely, 2^405204542250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 405204542250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (509599973376).

405204542250 is an abundant number, since it is smaller than the sum of its proper divisors (613995404502).

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

405204542250 is a wasteful number, since it uses less digits than its factorization.

405204542250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7205 (or 7195 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 33.

Adding to 405204542250 its reverse (52245402504), we get a palindrome (457449944754).

The spelling of 405204542250 in words is "four hundred five billion, two hundred four million, five hundred forty-two thousand, two hundred fifty".