400420050 has 48 divisors (see below), whose sum is σ = 995293440. Its totient is φ = 106536640.

The previous prime is 400419997. The next prime is 400420051. The reversal of 400420050 is 50024004.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (400420051) 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 23 ways as a sum of consecutive naturals, for example, 69064 + ... + 74636.

It is an arithmetic number, because the mean of its divisors is an integer number (20735280).

Almost surely, 2^400420050 is an apocalyptic number.

400420050 is an abundant number, since it is smaller than the sum of its proper divisors (594873390).

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

400420050 is a wasteful number, since it uses less digits than its factorization.

400420050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6067 (or 6062 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 400420050 is about 20010.4984945403. The cubic root of 400420050 is about 737.0641224056.

Adding to 400420050 its reverse (50024004), we get a palindrome (450444054).

The spelling of 400420050 in words is "four hundred million, four hundred twenty thousand, fifty".