402144424044 has 96 divisors (see below), whose sum is σ = 1051315077120. Its totient is φ = 118588276800.

The previous prime is 402144424037. The next prime is 402144424063. The reversal of 402144424044 is 440424441204.

402144424044 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 402144423996 and 402144424014.

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, 1407477 + ... + 1668915.

It is an arithmetic number, because the mean of its divisors is an integer number (10951198720).

Almost surely, 2^402144424044 is an apocalyptic number.

402144424044 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402144424044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (525657538560).

402144424044 is an abundant number, since it is smaller than the sum of its proper divisors (649170653076).

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

402144424044 is a wasteful number, since it uses less digits than its factorization.

402144424044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261771 (or 261769 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 33.

Adding to 402144424044 its reverse (440424441204), we get a palindrome (842568865248).

The spelling of 402144424044 in words is "four hundred two billion, one hundred forty-four million, four hundred twenty-four thousand, forty-four".