401243232340 has 48 divisors (see below), whose sum is σ = 887204203200. Its totient is φ = 152007985152.

The previous prime is 401243232331. The next prime is 401243232373. The reversal of 401243232340 is 43232342104.

It is a super-2 number, since 2×401243232340² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401243232299 and 401243232308.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 1246132 + ... + 1534708.

It is an arithmetic number, because the mean of its divisors is an integer number (18483420900).

Almost surely, 2^401243232340 is an apocalyptic number.

It is an amenable number.

401243232340 is an abundant number, since it is smaller than the sum of its proper divisors (485960970860).

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

401243232340 is a wasteful number, since it uses less digits than its factorization.

401243232340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292264 (or 292262 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 401243232340 its reverse (43232342104), we get a palindrome (444475574444).

The spelling of 401243232340 in words is "four hundred one billion, two hundred forty-three million, two hundred thirty-two thousand, three hundred forty".