401222044340 has 24 divisors (see below), whose sum is σ = 907379085480. Its totient is φ = 148143523968.

The previous prime is 401222044337. The next prime is 401222044351. The reversal of 401222044340 is 43440222104.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8910227236 + 392311817104 = 94394^2 + 626348^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 771580595 + ... + 771581114.

It is an arithmetic number, because the mean of its divisors is an integer number (37807461895).

Almost surely, 2^401222044340 is an apocalyptic number.

It is an amenable number.

401222044340 is an abundant number, since it is smaller than the sum of its proper divisors (506157041140).

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

401222044340 is a wasteful number, since it uses less digits than its factorization.

401222044340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1543161731 (or 1543161729 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 401222044340 its reverse (43440222104), we get a palindrome (444662266444).

The spelling of 401222044340 in words is "four hundred one billion, two hundred twenty-two million, forty-four thousand, three hundred forty".