405243150420 has 96 divisors (see below), whose sum is σ = 1146621168000. Its totient is φ = 106928985600.

The previous prime is 405243150379. The next prime is 405243150449. The reversal of 405243150420 is 24051342504.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10239831 + ... + 10279329.

It is an arithmetic number, because the mean of its divisors is an integer number (11943970500).

Almost surely, 2^405243150420 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 405243150420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (573310584000).

405243150420 is an abundant number, since it is smaller than the sum of its proper divisors (741378017580).

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

405243150420 is a wasteful number, since it uses less digits than its factorization.

405243150420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41305 (or 41303 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 405243150420 its reverse (24051342504), we get a palindrome (429294492924).

The spelling of 405243150420 in words is "four hundred five billion, two hundred forty-three million, one hundred fifty thousand, four hundred twenty".