401243023412 has 72 divisors (see below), whose sum is σ = 915157169472. Its totient is φ = 149531500800.

The previous prime is 401243023411. The next prime is 401243023453. The reversal of 401243023412 is 214320342104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401243023411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1068389 + ... + 1394252.

Almost surely, 2^401243023412 is an apocalyptic number.

It is an amenable number.

401243023412 is an abundant number, since it is smaller than the sum of its proper divisors (513914146060).

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

401243023412 is a wasteful number, since it uses less digits than its factorization.

401243023412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2462709 (or 2462684 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 401243023412 its reverse (214320342104), we get a palindrome (615563365516).

The spelling of 401243023412 in words is "four hundred one billion, two hundred forty-three million, twenty-three thousand, four hundred twelve".