400420110 has 64 divisors (see below), whose sum is σ = 1037422080. Its totient is φ = 98609280.

The previous prime is 400420109. The next prime is 400420129. The reversal of 400420110 is 11024004.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 10005 + ... + 30015.

It is an arithmetic number, because the mean of its divisors is an integer number (16209720).

Almost surely, 2^400420110 is an apocalyptic number.

It is a pronic number, being equal to 20010×20011.

It is a practical number, because each smaller number is the sum of distinct divisors of 400420110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (518711040).

400420110 is an abundant number, since it is smaller than the sum of its proper divisors (637001970).

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

400420110 is a wasteful number, since it uses less digits than its factorization.

400420110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20073.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 400420110 is about 20010.4999937533. The cubic root of 400420110 is about 737.0641592202.

Adding to 400420110 its reverse (11024004), we get a palindrome (411444114).

The spelling of 400420110 in words is "four hundred million, four hundred twenty thousand, one hundred ten".