401321313342 has 128 divisors (see below), whose sum is σ = 939438213120. Its totient is φ = 126747244800.

The previous prime is 401321313331. The next prime is 401321313373. The reversal of 401321313342 is 243313123104.

It is a happy number.

401321313342 is a `hidden beast` number, since 4 + 0 + 1 + 3 + 2 + 1 + 313 + 342 = 666.

It is a super-2 number, since 2×401321313342² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 69950298 + ... + 69956034.

It is an arithmetic number, because the mean of its divisors is an integer number (7339361040).

Almost surely, 2^401321313342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401321313342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (469719106560).

401321313342 is an abundant number, since it is smaller than the sum of its proper divisors (538116899778).

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

401321313342 is a wasteful number, since it uses less digits than its factorization.

401321313342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6295 (or 6289 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 401321313342 its reverse (243313123104), we get a palindrome (644634436446).

The spelling of 401321313342 in words is "four hundred one billion, three hundred twenty-one million, three hundred thirteen thousand, three hundred forty-two".