401442220023400 has 24 divisors (see below), whose sum is σ = 933353161554870. Its totient is φ = 160576888009280.

The previous prime is 401442220023371. The next prime is 401442220023433. The reversal of 401442220023400 is 4320022244104.

It can be written as a sum of positive squares in 3 ways, for example, as 210022875371556 + 191419344651844 = 14492166^2 + 13835438^2 .

It is a super-2 number, since 2×401442220023400² (a number of 30 digits) contains 22 as substring.

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 5 ways as a sum of consecutive naturals, for example, 1003605549859 + ... + 1003605550258.

Almost surely, 2^{401442220023400} is an apocalyptic number.

401442220023400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401442220023400 is an abundant number, since it is smaller than the sum of its proper divisors (531910941531470).

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

401442220023400 is a wasteful number, since it uses less digits than its factorization.

401442220023400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2007211100133 (or 2007211100124 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 401442220023400 its reverse (4320022244104), we get a palindrome (405762242267504).

The spelling of 401442220023400 in words is "four hundred one trillion, four hundred forty-two billion, two hundred twenty million, twenty-three thousand, four hundred".