401000244243 has 32 divisors (see below), whose sum is σ = 553092340800. Its totient is φ = 258227274240.

The previous prime is 401000244223. The next prime is 401000244259. The reversal of 401000244243 is 342442000104.

It is a happy number.

It is not a de Polignac number, because 401000244243 - 2⁹ = 401000243731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (401000244223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38712621 + ... + 38722977.

It is an arithmetic number, because the mean of its divisors is an integer number (17284135650).

Almost surely, 2^401000244243 is an apocalyptic number.

401000244243 is a deficient number, since it is larger than the sum of its proper divisors (152092096557).

401000244243 is a wasteful number, since it uses less digits than its factorization.

401000244243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12887.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 401000244243 its reverse (342442000104), we get a palindrome (743442244347).

The spelling of 401000244243 in words is "four hundred one billion, two hundred forty-four thousand, two hundred forty-three".