1142220023 has 8 divisors (see below), whose sum is σ = 1305752448. Its totient is φ = 978777144.

The previous prime is 1142220019. The next prime is 1142220061. The reversal of 1142220023 is 3200222411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1142220023 - 2² = 1142220019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1142219983 and 1142220010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142220073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7640 + ... + 48402.

It is an arithmetic number, because the mean of its divisors is an integer number (163219056).

Almost surely, 2^1142220023 is an apocalyptic number.

1142220023 is a deficient number, since it is larger than the sum of its proper divisors (163532425).

1142220023 is an equidigital number, since it uses as much as digits as its factorization.

1142220023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44773.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1142220023 is about 33796.7457457075. The cubic root of 1142220023 is about 1045.3215963407.

Adding to 1142220023 its reverse (3200222411), we get a palindrome (4342442434).

The spelling of 1142220023 in words is "one billion, one hundred forty-two million, two hundred twenty thousand, twenty-three".