1012001 has 4 divisors (see below), whose sum is σ = 1022532. Its totient is φ = 1001472.

The previous prime is 1011979. The next prime is 1012007. The reversal of 1012001 is 1002101.

It is a happy number.

1012001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 555025 + 456976 = 745^2 + 676^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012001 - 2⁶ = 1011937 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5120 + ... + 5313.

It is an arithmetic number, because the mean of its divisors is an integer number (255633).

2^1012001 is an apocalyptic number.

It is an amenable number.

1012001 is a deficient number, since it is larger than the sum of its proper divisors (10531).

1012001 is an equidigital number, since it uses as much as digits as its factorization.

1012001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10530.

The product of its (nonzero) digits is 2, while the sum is 5.

The square root of 1012001 is about 1005.9826042234. The cubic root of 1012001 is about 100.3984436514.

Adding to 1012001 its reverse (1002101), we get a palindrome (2014102).

Multiplying 1012001 by its reverse (1002101), we get a palindrome (1014127214101).

The spelling of 1012001 in words is "one million, twelve thousand, one".