1142023 has 4 divisors (see below), whose sum is σ = 1147240. Its totient is φ = 1136808.

The previous prime is 1142021. The next prime is 1142039. The reversal of 1142023 is 3202411.

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

It is a cyclic number.

It is not a de Polignac number, because 1142023 - 2¹ = 1142021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1141994 and 1142012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142021) 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, 2265 + ... + 2722.

It is an arithmetic number, because the mean of its divisors is an integer number (286810).

2^1142023 is an apocalyptic number.

1142023 is a deficient number, since it is larger than the sum of its proper divisors (5217).

1142023 is an equidigital number, since it uses as much as digits as its factorization.

1142023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5216.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1142023 is about 1068.6547618385. The cubic root of 1142023 is about 104.5261489929.

Adding to 1142023 its reverse (3202411), we get a palindrome (4344434).

The spelling of 1142023 in words is "one million, one hundred forty-two thousand, twenty-three".