401022401 has 8 divisors (see below), whose sum is σ = 457274664. Its totient is φ = 348399360.

The previous prime is 401022389. The next prime is 401022409. The reversal of 401022401 is 104220104.

It can be written as a sum of positive squares in 4 ways, for example, as 87909376 + 313113025 = 9376^2 + 17695^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-401022401 is a prime.

It is a super-2 number, since 2×401022401² = 321637932207609602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401022409) 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, 907070 + ... + 907511.

It is an arithmetic number, because the mean of its divisors is an integer number (57159333).

Almost surely, 2^401022401 is an apocalyptic number.

It is an amenable number.

401022401 is a deficient number, since it is larger than the sum of its proper divisors (56252263).

401022401 is a wasteful number, since it uses less digits than its factorization.

401022401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1814611.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 401022401 is about 20025.5437129682. The cubic root of 401022401 is about 737.4335252160.

Adding to 401022401 its reverse (104220104), we get a palindrome (505242505).

The spelling of 401022401 in words is "four hundred one million, twenty-two thousand, four hundred one".