401243243304442 has 48 divisors (see below), whose sum is σ = 763795949831712. Its totient is φ = 156324568354080.

The previous prime is 401243243304401. The next prime is 401243243304451. The reversal of 401243243304442 is 244403342342104.

It is a super-2 number, since 2×401243243304442² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401243243304395 and 401243243304404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37944888 + ... + 47352940.

It is an arithmetic number, because the mean of its divisors is an integer number (15912415621494).

Almost surely, 2^{401243243304442} is an apocalyptic number.

401243243304442 is a deficient number, since it is larger than the sum of its proper divisors (362552706527270).

401243243304442 is a wasteful number, since it uses less digits than its factorization.

401243243304442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9447643 (or 9447636 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 40.

Adding to 401243243304442 its reverse (244403342342104), we get a palindrome (645646585646546).

The spelling of 401243243304442 in words is "four hundred one trillion, two hundred forty-three billion, two hundred forty-three million, three hundred four thousand, four hundred forty-two".