1012023 has 12 divisors (see below), whose sum is σ = 1525680. Its totient is φ = 645216.

The previous prime is 1012009. The next prime is 1012031. The reversal of 1012023 is 3202101.

It is a happy number.

It is not a de Polignac number, because 1012023 - 2⁴ = 1012007 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1011996 and 1012014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2238 + ... + 2651.

It is an arithmetic number, because the mean of its divisors is an integer number (127140).

2^1012023 is an apocalyptic number.

1012023 is a deficient number, since it is larger than the sum of its proper divisors (513657).

1012023 is a wasteful number, since it uses less digits than its factorization.

1012023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4918 (or 4915 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 1012023 is about 1005.9935387466. The cubic root of 1012023 is about 100.3991711703.

Adding to 1012023 its reverse (3202101), we get a palindrome (4214124).

The spelling of 1012023 in words is "one million, twelve thousand, twenty-three".