1120023 has 6 divisors (see below), whose sum is σ = 1617824. Its totient is φ = 746676.

The previous prime is 1120019. The next prime is 1120051. The reversal of 1120023 is 3200211.

It is a happy number.

It is not a de Polignac number, because 1120023 - 2² = 1120019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 124447 = 1120023 / (1 + 1 + 2 + 0 + 0 + 2 + 3).

It is a Duffinian number.

1120023 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1119987 and 1120014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120073) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62215 + ... + 62232.

2^1120023 is an apocalyptic number.

1120023 is a deficient number, since it is larger than the sum of its proper divisors (497801).

1120023 is a wasteful number, since it uses less digits than its factorization.

1120023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124453 (or 124450 counting only the distinct ones).

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

The square root of 1120023 is about 1058.3113908486. The cubic root of 1120023 is about 103.8505929093.

Adding to 1120023 its reverse (3200211), we get a palindrome (4320234).

The spelling of 1120023 in words is "one million, one hundred twenty thousand, twenty-three".