401404254 has 24 divisors (see below), whose sum is σ = 831456600. Its totient is φ = 129185952.

The previous prime is 401404249. The next prime is 401404261. The reversal of 401404254 is 452404104.

It is a happy number.

It is a super-2 number, since 2×401404254² = 322250750258593032, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 34729 + ... + 44820.

It is an arithmetic number, because the mean of its divisors is an integer number (34644025).

Almost surely, 2^401404254 is an apocalyptic number.

401404254 is an abundant number, since it is smaller than the sum of its proper divisors (430052346).

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

401404254 is a wasteful number, since it uses less digits than its factorization.

401404254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79612 (or 79583 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 401404254 is about 20035.0755925701. The cubic root of 401404254 is about 737.6675120402.

Adding to 401404254 its reverse (452404104), we get a palindrome (853808358).

The spelling of 401404254 in words is "four hundred one million, four hundred four thousand, two hundred fifty-four".