401020105 has 4 divisors (see below), whose sum is σ = 481224132. Its totient is φ = 320816080.

The previous prime is 401020079. The next prime is 401020117. The reversal of 401020105 is 501020104.

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

It can be written as a sum of positive squares in 2 ways, for example, as 250810569 + 150209536 = 15837^2 + 12256^2 .

It is not a de Polignac number, because 401020105 - 2⁷ = 401019977 is a prime.

It is a super-2 number, since 2×401020105² = 321634249228422050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40102006 + ... + 40102015.

It is an arithmetic number, because the mean of its divisors is an integer number (120306033).

Almost surely, 2^401020105 is an apocalyptic number.

It is an amenable number.

401020105 is a deficient number, since it is larger than the sum of its proper divisors (80204027).

401020105 is an equidigital number, since it uses as much as digits as its factorization.

401020105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80204026.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 401020105 is about 20025.4863861031. The cubic root of 401020105 is about 737.4321178543.

Adding to 401020105 its reverse (501020104), we get a palindrome (902040209).

Subtracting 401020105 from its reverse (501020104), we obtain a palindrome (99999999).

The spelling of 401020105 in words is "four hundred one million, twenty thousand, one hundred five".