401224040 has 32 divisors (see below), whose sum is σ = 1031719680. Its totient is φ = 137562432.

The previous prime is 401224027. The next prime is 401224051. The reversal of 401224040 is 40422104.

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, 716192 + ... + 716751.

It is an arithmetic number, because the mean of its divisors is an integer number (32241240).

Almost surely, 2^401224040 is an apocalyptic number.

401224040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401224040 is an abundant number, since it is smaller than the sum of its proper divisors (630495640).

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

401224040 is a wasteful number, since it uses less digits than its factorization.

401224040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432961 (or 1432957 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 401224040 is about 20030.5776252209. The cubic root of 401224040 is about 737.5571013913.

Adding to 401224040 its reverse (40422104), we get a palindrome (441646144).

The spelling of 401224040 in words is "four hundred one million, two hundred twenty-four thousand, forty".