401438124 has 72 divisors (see below), whose sum is σ = 1036875840. Its totient is φ = 130917600.

The previous prime is 401438117. The next prime is 401438143. The reversal of 401438124 is 421834104.

It is a super-2 number, since 2×401438124² = 322305134801278752, which contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 702759 + ... + 703329.

Almost surely, 2^401438124 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401438124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (518437920).

401438124 is an abundant number, since it is smaller than the sum of its proper divisors (635437716).

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

401438124 is a wasteful number, since it uses less digits than its factorization.

401438124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971 (or 966 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 401438124 is about 20035.9208423272. The cubic root of 401438124 is about 737.6882592842.

The spelling of 401438124 in words is "four hundred one million, four hundred thirty-eight thousand, one hundred twenty-four".