401243500 has 48 divisors (see below), whose sum is σ = 1001512512. Its totient is φ = 137568000.

The previous prime is 401243489. The next prime is 401243519. The reversal of 401243500 is 5342104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53821 + ... + 60820.

It is an arithmetic number, because the mean of its divisors is an integer number (20864844).

Almost surely, 2^401243500 is an apocalyptic number.

It is an amenable number.

401243500 is an abundant number, since it is smaller than the sum of its proper divisors (600269012).

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

401243500 is a wasteful number, since it uses less digits than its factorization.

401243500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114667 (or 114655 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 401243500 is about 20031.0633766658. The cubic root of 401243500 is about 737.5690254268.

Adding to 401243500 its reverse (5342104), we get a palindrome (406585604).

The spelling of 401243500 in words is "four hundred one million, two hundred forty-three thousand, five hundred".