401012 has 12 divisors (see below), whose sum is σ = 726180. Its totient is φ = 193536.

The previous prime is 400997. The next prime is 401017. The reversal of 401012 is 210104.

It can be written as a sum of positive squares in 2 ways, for example, as 80656 + 320356 = 284^2 + 566^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401017) by changing a digit.

401012 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1613 + ... + 1844.

It is an arithmetic number, because the mean of its divisors is an integer number (60515).

2⁴⁰¹⁰¹² is an apocalyptic number.

It is an amenable number.

401012 is a deficient number, since it is larger than the sum of its proper divisors (325168).

401012 is a wasteful number, since it uses less digits than its factorization.

401012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3490 (or 3488 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 401012 is about 633.2550828852. The cubic root of 401012 is about 73.7427149751.

Adding to 401012 its reverse (210104), we get a palindrome (611116).

The spelling of 401012 in words is "four hundred one thousand, twelve", and thus it is an iban number.