401003001 has 32 divisors (see below), whose sum is σ = 695520000. Its totient is φ = 223551360.

The previous prime is 401002997. The next prime is 401003041. The reversal of 401003001 is 100300104.

It is not a de Polignac number, because 401003001 - 2² = 401002997 is a prime.

It is a super-2 number, since 2×401003001² = 321606813622012002, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (401003041) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 18126 + ... + 33623.

It is an arithmetic number, because the mean of its divisors is an integer number (21735000).

Almost surely, 2^401003001 is an apocalyptic number.

401003001 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

401003001 is a deficient number, since it is larger than the sum of its proper divisors (294516999).

401003001 is a wasteful number, since it uses less digits than its factorization.

401003001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51806 (or 51800 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 401003001 is about 20025.0593257548. The cubic root of 401003001 is about 737.4216335768.

Adding to 401003001 its reverse (100300104), we get a palindrome (501303105).

The spelling of 401003001 in words is "four hundred one million, three thousand, one".