401001426 has 48 divisors (see below), whose sum is σ = 1004140800. Its totient is φ = 113281344.

The previous prime is 401001421. The next prime is 401001463. The reversal of 401001426 is 624100104.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 401001399 and 401001408.

It is not an unprimeable number, because it can be changed into a prime (401001421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6666 + ... + 29093.

It is an arithmetic number, because the mean of its divisors is an integer number (20919600).

Almost surely, 2^401001426 is an apocalyptic number.

401001426 is an abundant number, since it is smaller than the sum of its proper divisors (603139374).

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

401001426 is a wasteful number, since it uses less digits than its factorization.

401001426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35863 (or 35860 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 401001426 is about 20025.0199999900. The cubic root of 401001426 is about 737.4206681305.

The spelling of 401001426 in words is "four hundred one million, one thousand, four hundred twenty-six".