401244404250 has 128 divisors (see below), whose sum is σ = 1015458312960. Its totient is φ = 105515827200.

The previous prime is 401244404191. The next prime is 401244404257. The reversal of 401244404250 is 52404442104.

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

It is not an unprimeable number, because it can be changed into a prime (401244404257) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20578506 + ... + 20597994.

It is an arithmetic number, because the mean of its divisors is an integer number (7933268070).

Almost surely, 2^401244404250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401244404250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (507729156480).

401244404250 is an abundant number, since it is smaller than the sum of its proper divisors (614213908710).

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

401244404250 is a wasteful number, since it uses less digits than its factorization.

401244404250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19889 (or 19879 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 30.

Adding to 401244404250 its reverse (52404442104), we get a palindrome (453648846354).

The spelling of 401244404250 in words is "four hundred one billion, two hundred forty-four million, four hundred four thousand, two hundred fifty".