401230240520 has 32 divisors (see below), whose sum is σ = 950282150400. Its totient is φ = 152045143488.

The previous prime is 401230240517. The next prime is 401230240553. The reversal of 401230240520 is 25042032104.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263966504 + ... + 263968023.

It is an arithmetic number, because the mean of its divisors is an integer number (29696317200).

Almost surely, 2^401230240520 is an apocalyptic number.

401230240520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401230240520 is an abundant number, since it is smaller than the sum of its proper divisors (549051909880).

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

401230240520 is a wasteful number, since it uses less digits than its factorization.

401230240520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527934557 (or 527934553 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 401230240520 its reverse (25042032104), we get a palindrome (426272272624).

The spelling of 401230240520 in words is "four hundred one billion, two hundred thirty million, two hundred forty thousand, five hundred twenty".