401032021 has 8 divisors (see below), whose sum is σ = 432472320. Its totient is φ = 369676272.

The previous prime is 401032007. The next prime is 401032109. The reversal of 401032021 is 120230104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 401032021 - 2⁷ = 401031893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 401031992 and 401032010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401032001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11101 + ... + 30418.

It is an arithmetic number, because the mean of its divisors is an integer number (54059040).

Almost surely, 2^401032021 is an apocalyptic number.

It is an amenable number.

401032021 is a deficient number, since it is larger than the sum of its proper divisors (31440299).

401032021 is a wasteful number, since it uses less digits than its factorization.

401032021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42275.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 401032021 is about 20025.7839047564. The cubic root of 401032021 is about 737.4394218556.

Adding to 401032021 its reverse (120230104), we get a palindrome (521262125).

It can be divided in two parts, 40103 and 2021, that added together give a palindrome (42124).

The spelling of 401032021 in words is "four hundred one million, thirty-two thousand, twenty-one".