401020103 has 4 divisors (see below), whose sum is σ = 437476488. Its totient is φ = 364563720.

The previous prime is 401020079. The next prime is 401020117. The reversal of 401020103 is 301020104.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 401020103 - 2⁸ = 401019847 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (11), and also a Moran number because the ratio is a prime number: 36456373 = 401020103 / (4 + 0 + 1 + 0 + 2 + 0 + 1 + 0 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401020183) 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, 18228176 + ... + 18228197.

It is an arithmetic number, because the mean of its divisors is an integer number (109369122).

Almost surely, 2^401020103 is an apocalyptic number.

401020103 is a deficient number, since it is larger than the sum of its proper divisors (36456385).

401020103 is a wasteful number, since it uses less digits than its factorization.

401020103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36456384.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 401020103 is about 20025.4863361667. The cubic root of 401020103 is about 737.4321166284.

Adding to 401020103 its reverse (301020104), we get a palindrome (702040207).

Subtracting from 401020103 its reverse (301020104), we obtain a palindrome (99999999).

The spelling of 401020103 in words is "four hundred one million, twenty thousand, one hundred three".