401022003 has 4 divisors (see below), whose sum is σ = 534696008. Its totient is φ = 267348000.

The previous prime is 401021953. The next prime is 401022023. The reversal of 401022003 is 300220104.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 401022003 - 2¹⁰ = 401020979 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 401022003.

It is not an unprimeable number, because it can be changed into a prime (401022023) 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 3 ways as a sum of consecutive naturals, for example, 66836998 + ... + 66837003.

It is an arithmetic number, because the mean of its divisors is an integer number (133674002).

Almost surely, 2^401022003 is an apocalyptic number.

401022003 is a deficient number, since it is larger than the sum of its proper divisors (133674005).

401022003 is a wasteful number, since it uses less digits than its factorization.

401022003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133674004.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 401022003 is about 20025.5337756575. The cubic root of 401022003 is about 737.4332812573.

Adding to 401022003 its reverse (300220104), we get a palindrome (701242107).

The spelling of 401022003 in words is "four hundred one million, twenty-two thousand, three".